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Finding the Fourth Proportional to 288,853, 398,609.68 and 159,788.12

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Solution

The fourth proportional to 288,853, 398,609.68 and 159,788.12 is: 220,503.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,853 : 398,609.68 = 159,788.12 : x
  2. Step 2: Convert to fraction form
    288,853/398,609.68 = 159,788.12/x
  3. Step 3: Cross multiply
    288,853x = 398,609.68 × 159,788.12
  4. Step 4: Simplify right side
    288,853x = 63,693,091,381.00
  5. Step 5: Solve for x
    x = 63,693,091,381.00/288,853
  6. Step 6: Final answer
    x = 220,503.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.