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Finding the Fourth Proportional to 392,955.60, 589,433.40 and 235,102.80

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Solution

The fourth proportional to 392,955.60, 589,433.40 and 235,102.80 is: 352,654.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,955.60 : 589,433.40 = 235,102.80 : x
  2. Step 2: Convert to fraction form
    392,955.60/589,433.40 = 235,102.80/x
  3. Step 3: Cross multiply
    392,955.60x = 589,433.40 × 235,102.80
  4. Step 4: Simplify right side
    392,955.60x = 138,577,442,753.52
  5. Step 5: Solve for x
    x = 138,577,442,753.52/392,955.60
  6. Step 6: Final answer
    x = 352,654.20

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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.