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Finding the Fourth Proportional to 343,301.20, 514,951.80 and 156,677.20

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Solution

The fourth proportional to 343,301.20, 514,951.80 and 156,677.20 is: 235,015.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,301.20 : 514,951.80 = 156,677.20 : x
  2. Step 2: Convert to fraction form
    343,301.20/514,951.80 = 156,677.20/x
  3. Step 3: Cross multiply
    343,301.20x = 514,951.80 × 156,677.20
  4. Step 4: Simplify right side
    343,301.20x = 80,681,206,158.96
  5. Step 5: Solve for x
    x = 80,681,206,158.96/343,301.20
  6. Step 6: Final answer
    x = 235,015.80

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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.