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Finding the Fourth Proportional to 318,363.90, 439,339.73 and 175,120.80

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Solution

The fourth proportional to 318,363.90, 439,339.73 and 175,120.80 is: 241,665.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,363.90 : 439,339.73 = 175,120.80 : x
  2. Step 2: Convert to fraction form
    318,363.90/439,339.73 = 175,120.80/x
  3. Step 3: Cross multiply
    318,363.90x = 439,339.73 × 175,120.80
  4. Step 4: Simplify right side
    318,363.90x = 76,937,524,113.78
  5. Step 5: Solve for x
    x = 76,937,524,113.78/318,363.90
  6. Step 6: Final answer
    x = 241,665.35

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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.