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Finding the Fourth Proportional to 389,752.56, 538,229.96 and 368,524.92

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Solution

The fourth proportional to 389,752.56, 538,229.96 and 368,524.92 is: 508,915.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,752.56 : 538,229.96 = 368,524.92 : x
  2. Step 2: Convert to fraction form
    389,752.56/538,229.96 = 368,524.92/x
  3. Step 3: Cross multiply
    389,752.56x = 538,229.96 × 368,524.92
  4. Step 4: Simplify right side
    389,752.56x = 198,351,152,039.95
  5. Step 5: Solve for x
    x = 198,351,152,039.95/389,752.56
  6. Step 6: Final answer
    x = 508,915.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.