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Finding the Fourth Proportional to 280,677.92, 387,335.66 and 151,616.39

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Solution

The fourth proportional to 280,677.92, 387,335.66 and 151,616.39 is: 209,230.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,677.92 : 387,335.66 = 151,616.39 : x
  2. Step 2: Convert to fraction form
    280,677.92/387,335.66 = 151,616.39/x
  3. Step 3: Cross multiply
    280,677.92x = 387,335.66 × 151,616.39
  4. Step 4: Simplify right side
    280,677.92x = 58,726,431,792.71
  5. Step 5: Solve for x
    x = 58,726,431,792.71/280,677.92
  6. Step 6: Final answer
    x = 209,230.68

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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.