Home / 458,330.06-687,513.74-218,320.58

Finding the Fourth Proportional to 458,330.06, 687,513.74 and 218,320.58

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Solution

The fourth proportional to 458,330.06, 687,513.74 and 218,320.58 is: 327,489.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,330.06 : 687,513.74 = 218,320.58 : x
  2. Step 2: Convert to fraction form
    458,330.06/687,513.74 = 218,320.58/x
  3. Step 3: Cross multiply
    458,330.06x = 687,513.74 × 218,320.58
  4. Step 4: Simplify right side
    458,330.06x = 150,098,399,101.95
  5. Step 5: Solve for x
    x = 150,098,399,101.95/458,330.06
  6. Step 6: Final answer
    x = 327,489.75

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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.