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Finding the Fourth Proportional to 358,737,098.67, 538,105,655.07 and 86,107,865.67

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Solution

The fourth proportional to 358,737,098.67, 538,105,655.07 and 86,107,865.67 is: 129,161,800.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,737,098.67 : 538,105,655.07 = 86,107,865.67 : x
  2. Step 2: Convert to fraction form
    358,737,098.67/538,105,655.07 = 86,107,865.67/x
  3. Step 3: Cross multiply
    358,737,098.67x = 538,105,655.07 × 86,107,865.67
  4. Step 4: Simplify right side
    358,737,098.67x = 46,335,129,463,034,920
  5. Step 5: Solve for x
    x = 46,335,129,463,034,920/358,737,098.67
  6. Step 6: Final answer
    x = 129,161,800.20

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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.