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Finding the Fourth Proportional to 458,992.95, 688,489.97 and 143,451.51

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Solution

The fourth proportional to 458,992.95, 688,489.97 and 143,451.51 is: 215,177.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,992.95 : 688,489.97 = 143,451.51 : x
  2. Step 2: Convert to fraction form
    458,992.95/688,489.97 = 143,451.51/x
  3. Step 3: Cross multiply
    458,992.95x = 688,489.97 × 143,451.51
  4. Step 4: Simplify right side
    458,992.95x = 98,764,925,099.10
  5. Step 5: Solve for x
    x = 98,764,925,099.10/458,992.95
  6. Step 6: Final answer
    x = 215,177.43

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Similar ratio
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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.