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Finding the Fourth Proportional to 392,952.20, 589,082.70 and 235,243.40

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Solution

The fourth proportional to 392,952.20, 589,082.70 and 235,243.40 is: 352,658.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,952.20 : 589,082.70 = 235,243.40 : x
  2. Step 2: Convert to fraction form
    392,952.20/589,082.70 = 235,243.40/x
  3. Step 3: Cross multiply
    392,952.20x = 589,082.70 × 235,243.40
  4. Step 4: Simplify right side
    392,952.20x = 138,577,817,229.18
  5. Step 5: Solve for x
    x = 138,577,817,229.18/392,952.20
  6. Step 6: Final answer
    x = 352,658.20

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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.