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Finding the Fourth Proportional to 392,322.60, 588,338.10 and 155,616.30

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Solution

The fourth proportional to 392,322.60, 588,338.10 and 155,616.30 is: 233,366.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,322.60 : 588,338.10 = 155,616.30 : x
  2. Step 2: Convert to fraction form
    392,322.60/588,338.10 = 155,616.30/x
  3. Step 3: Cross multiply
    392,322.60x = 588,338.10 × 155,616.30
  4. Step 4: Simplify right side
    392,322.60x = 91,554,998,271.03
  5. Step 5: Solve for x
    x = 91,554,998,271.03/392,322.60
  6. Step 6: Final answer
    x = 233,366.62

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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.