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Finding the Fourth Proportional to 280,772.38, 387,465.96 and 159,924.97

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Solution

The fourth proportional to 280,772.38, 387,465.96 and 159,924.97 is: 220,696.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,772.38 : 387,465.96 = 159,924.97 : x
  2. Step 2: Convert to fraction form
    280,772.38/387,465.96 = 159,924.97/x
  3. Step 3: Cross multiply
    280,772.38x = 387,465.96 × 159,924.97
  4. Step 4: Simplify right side
    280,772.38x = 61,965,482,029.02
  5. Step 5: Solve for x
    x = 61,965,482,029.02/280,772.38
  6. Step 6: Final answer
    x = 220,696.50

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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.