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Finding the Fourth Proportional to 398,892.57, 598,451.45 and 162,404.97

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Solution

The fourth proportional to 398,892.57, 598,451.45 and 162,404.97 is: 243,653.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,892.57 : 598,451.45 = 162,404.97 : x
  2. Step 2: Convert to fraction form
    398,892.57/598,451.45 = 162,404.97/x
  3. Step 3: Cross multiply
    398,892.57x = 598,451.45 × 162,404.97
  4. Step 4: Simplify right side
    398,892.57x = 97,191,488,971.68
  5. Step 5: Solve for x
    x = 97,191,488,971.68/398,892.57
  6. Step 6: Final answer
    x = 243,653.29

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1.5x scale

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.