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Finding the Fourth Proportional to 280,153.92, 386,630.69 and 159,306.48

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Solution

The fourth proportional to 280,153.92, 386,630.69 and 159,306.48 is: 219,853.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,153.92 : 386,630.69 = 159,306.48 : x
  2. Step 2: Convert to fraction form
    280,153.92/386,630.69 = 159,306.48/x
  3. Step 3: Cross multiply
    280,153.92x = 386,630.69 × 159,306.48
  4. Step 4: Simplify right side
    280,153.92x = 61,592,773,487.34
  5. Step 5: Solve for x
    x = 61,592,773,487.34/280,153.92
  6. Step 6: Final answer
    x = 219,853.33

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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.