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Finding the Fourth Proportional to 538,780.50, 808,174.80 and 239,180.55

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Solution

The fourth proportional to 538,780.50, 808,174.80 and 239,180.55 is: 358,772.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,780.50 : 808,174.80 = 239,180.55 : x
  2. Step 2: Convert to fraction form
    538,780.50/808,174.80 = 239,180.55/x
  3. Step 3: Cross multiply
    538,780.50x = 808,174.80 × 239,180.55
  4. Step 4: Simplify right side
    538,780.50x = 193,299,693,160.14
  5. Step 5: Solve for x
    x = 193,299,693,160.14/538,780.50
  6. Step 6: Final answer
    x = 358,772.62

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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.