Home / 280,517.38-387,115.40-153,192.97

Finding the Fourth Proportional to 280,517.38, 387,115.40 and 153,192.97

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Solution

The fourth proportional to 280,517.38, 387,115.40 and 153,192.97 is: 211,407.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,517.38 : 387,115.40 = 153,192.97 : x
  2. Step 2: Convert to fraction form
    280,517.38/387,115.40 = 153,192.97/x
  3. Step 3: Cross multiply
    280,517.38x = 387,115.40 × 153,192.97
  4. Step 4: Simplify right side
    280,517.38x = 59,303,358,725.61
  5. Step 5: Solve for x
    x = 59,303,358,725.61/280,517.38
  6. Step 6: Final answer
    x = 211,407.08

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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.