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Finding the Fourth Proportional to 392,259.60, 588,477.42 and 126,035.28

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Solution

The fourth proportional to 392,259.60, 588,477.42 and 126,035.28 is: 189,081.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,259.60 : 588,477.42 = 126,035.28 : x
  2. Step 2: Convert to fraction form
    392,259.60/588,477.42 = 126,035.28/x
  3. Step 3: Cross multiply
    392,259.60x = 588,477.42 × 126,035.28
  4. Step 4: Simplify right side
    392,259.60x = 74,168,916,403.38
  5. Step 5: Solve for x
    x = 74,168,916,403.38/392,259.60
  6. Step 6: Final answer
    x = 189,081.20

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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.