Home / 458,144.16-687,432.96-221,353.92

Finding the Fourth Proportional to 458,144.16, 687,432.96 and 221,353.92

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Solution

The fourth proportional to 458,144.16, 687,432.96 and 221,353.92 is: 332,135.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,144.16 : 687,432.96 = 221,353.92 : x
  2. Step 2: Convert to fraction form
    458,144.16/687,432.96 = 221,353.92/x
  3. Step 3: Cross multiply
    458,144.16x = 687,432.96 × 221,353.92
  4. Step 4: Simplify right side
    458,144.16x = 152,165,980,433.20
  5. Step 5: Solve for x
    x = 152,165,980,433.20/458,144.16
  6. Step 6: Final answer
    x = 332,135.59

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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.