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Finding the Fourth Proportional to 338,772.71, 508,207.30 and 111,019.55

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Solution

The fourth proportional to 338,772.71, 508,207.30 and 111,019.55 is: 166,545.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,772.71 : 508,207.30 = 111,019.55 : x
  2. Step 2: Convert to fraction form
    338,772.71/508,207.30 = 111,019.55/x
  3. Step 3: Cross multiply
    338,772.71x = 508,207.30 × 111,019.55
  4. Step 4: Simplify right side
    338,772.71x = 56,420,942,934.13
  5. Step 5: Solve for x
    x = 56,420,942,934.13/338,772.71
  6. Step 6: Final answer
    x = 166,545.12

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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.