Home / 458,320.50-687,499.38-218,311.02

Finding the Fourth Proportional to 458,320.50, 687,499.38 and 218,311.02

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Solution

The fourth proportional to 458,320.50, 687,499.38 and 218,311.02 is: 327,475.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,320.50 : 687,499.38 = 218,311.02 : x
  2. Step 2: Convert to fraction form
    458,320.50/687,499.38 = 218,311.02/x
  3. Step 3: Cross multiply
    458,320.50x = 687,499.38 × 218,311.02
  4. Step 4: Simplify right side
    458,320.50x = 150,088,690,897.17
  5. Step 5: Solve for x
    x = 150,088,690,897.17/458,320.50
  6. Step 6: Final answer
    x = 327,475.40

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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.