Home / 312,689,984,282.75-431,488,496,998.15-175,486,312,030.77

Finding the Fourth Proportional to 312,689,984,282.75, 431,488,496,998.15 and 175,486,312,030.77

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Solution

The fourth proportional to 312,689,984,282.75, 431,488,496,998.15 and 175,486,312,030.77 is: 242,157,820,294.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,689,984,282.75 : 431,488,496,998.15 = 175,486,312,030.77 : x
  2. Step 2: Convert to fraction form
    312,689,984,282.75/431,488,496,998.15 = 175,486,312,030.77/x
  3. Step 3: Cross multiply
    312,689,984,282.75x = 431,488,496,998.15 × 175,486,312,030.77
  4. Step 4: Simplify right side
    312,689,984,282.75x = 75,720,325,021,905,320,935,424
  5. Step 5: Solve for x
    x = 75,720,325,021,905,320,935,424/312,689,984,282.75
  6. Step 6: Final answer
    x = 242,157,820,294.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.