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Finding the Fourth Proportional to 458,992.70, 688,489.59 and 143,451.26

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Solution

The fourth proportional to 458,992.70, 688,489.59 and 143,451.26 is: 215,177.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,992.70 : 688,489.59 = 143,451.26 : x
  2. Step 2: Convert to fraction form
    458,992.70/688,489.59 = 143,451.26/x
  3. Step 3: Cross multiply
    458,992.70x = 688,489.59 × 143,451.26
  4. Step 4: Simplify right side
    458,992.70x = 98,764,699,182.38
  5. Step 5: Solve for x
    x = 98,764,699,182.38/458,992.70
  6. Step 6: Final answer
    x = 215,177.06

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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.