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Finding the Fourth Proportional to 457,600.60, 686,595.30 and 220,821.40

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Solution

The fourth proportional to 457,600.60, 686,595.30 and 220,821.40 is: 331,325.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,600.60 : 686,595.30 = 220,821.40 : x
  2. Step 2: Convert to fraction form
    457,600.60/686,595.30 = 220,821.40/x
  3. Step 3: Cross multiply
    457,600.60x = 686,595.30 × 220,821.40
  4. Step 4: Simplify right side
    457,600.60x = 151,614,935,379.42
  5. Step 5: Solve for x
    x = 151,614,935,379.42/457,600.60
  6. Step 6: Final answer
    x = 331,325.91

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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.