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Finding the Fourth Proportional to 357,649.08, 536,332.74 and 129,890.85

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Solution

The fourth proportional to 357,649.08, 536,332.74 and 129,890.85 is: 194,785.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,649.08 : 536,332.74 = 129,890.85 : x
  2. Step 2: Convert to fraction form
    357,649.08/536,332.74 = 129,890.85/x
  3. Step 3: Cross multiply
    357,649.08x = 536,332.74 × 129,890.85
  4. Step 4: Simplify right side
    357,649.08x = 69,664,715,481.43
  5. Step 5: Solve for x
    x = 69,664,715,481.43/357,649.08
  6. Step 6: Final answer
    x = 194,785.11

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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.