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Finding the Fourth Proportional to 491,171.15, 736,756.90 and 220,983.71

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Solution

The fourth proportional to 491,171.15, 736,756.90 and 220,983.71 is: 331,475.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,171.15 : 736,756.90 = 220,983.71 : x
  2. Step 2: Convert to fraction form
    491,171.15/736,756.90 = 220,983.71/x
  3. Step 3: Cross multiply
    491,171.15x = 736,756.90 × 220,983.71
  4. Step 4: Simplify right side
    491,171.15x = 162,811,270,862.20
  5. Step 5: Solve for x
    x = 162,811,270,862.20/491,171.15
  6. Step 6: Final answer
    x = 331,475.64

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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.