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Finding the Fourth Proportional to 338,814.25, 508,035.72 and 156,246.87

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Solution

The fourth proportional to 338,814.25, 508,035.72 and 156,246.87 is: 234,284.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,814.25 : 508,035.72 = 156,246.87 : x
  2. Step 2: Convert to fraction form
    338,814.25/508,035.72 = 156,246.87/x
  3. Step 3: Cross multiply
    338,814.25x = 508,035.72 × 156,246.87
  4. Step 4: Simplify right side
    338,814.25x = 79,378,991,098.20
  5. Step 5: Solve for x
    x = 79,378,991,098.20/338,814.25
  6. Step 6: Final answer
    x = 234,284.69

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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.