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Finding the Fourth Proportional to 392,666.60, 588,999.90 and 268,250.60

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Solution

The fourth proportional to 392,666.60, 588,999.90 and 268,250.60 is: 402,375.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,666.60 : 588,999.90 = 268,250.60 : x
  2. Step 2: Convert to fraction form
    392,666.60/588,999.90 = 268,250.60/x
  3. Step 3: Cross multiply
    392,666.60x = 588,999.90 × 268,250.60
  4. Step 4: Simplify right side
    392,666.60x = 157,999,576,574.94
  5. Step 5: Solve for x
    x = 157,999,576,574.94/392,666.60
  6. Step 6: Final answer
    x = 402,375.90

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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.