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Finding the Fourth Proportional to 280,044.74, 386,446.55 and 159,169.25

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Solution

The fourth proportional to 280,044.74, 386,446.55 and 159,169.25 is: 219,644.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,044.74 : 386,446.55 = 159,169.25 : x
  2. Step 2: Convert to fraction form
    280,044.74/386,446.55 = 159,169.25/x
  3. Step 3: Cross multiply
    280,044.74x = 386,446.55 × 159,169.25
  4. Step 4: Simplify right side
    280,044.74x = 61,510,407,698.86
  5. Step 5: Solve for x
    x = 61,510,407,698.86/280,044.74
  6. Step 6: Final answer
    x = 219,644.93

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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.