Home / 387,820,488.22-581,687,760.24-138,815,800.57

Finding the Fourth Proportional to 387,820,488.22, 581,687,760.24 and 138,815,800.57

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Solution

The fourth proportional to 387,820,488.22, 581,687,760.24 and 138,815,800.57 is: 208,208,319.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,820,488.22 : 581,687,760.24 = 138,815,800.57 : x
  2. Step 2: Convert to fraction form
    387,820,488.22/581,687,760.24 = 138,815,800.57/x
  3. Step 3: Cross multiply
    387,820,488.22x = 581,687,760.24 × 138,815,800.57
  4. Step 4: Simplify right side
    387,820,488.22x = 80,747,452,119,485,808
  5. Step 5: Solve for x
    x = 80,747,452,119,485,808/387,820,488.22
  6. Step 6: Final answer
    x = 208,208,319.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.