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Finding the Fourth Proportional to 538,757.28, 808,140 and 239,157.36

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Solution

The fourth proportional to 538,757.28, 808,140 and 239,157.36 is: 358,737.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,757.28 : 808,140 = 239,157.36 : x
  2. Step 2: Convert to fraction form
    538,757.28/808,140 = 239,157.36/x
  3. Step 3: Cross multiply
    538,757.28x = 808,140 × 239,157.36
  4. Step 4: Simplify right side
    538,757.28x = 193,272,628,910.40
  5. Step 5: Solve for x
    x = 193,272,628,910.40/538,757.28
  6. Step 6: Final answer
    x = 358,737.85

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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.