Home / 280,105.64-386,545.70-152,781.16

Finding the Fourth Proportional to 280,105.64, 386,545.70 and 152,781.16

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Solution

The fourth proportional to 280,105.64, 386,545.70 and 152,781.16 is: 210,837.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,105.64 : 386,545.70 = 152,781.16 : x
  2. Step 2: Convert to fraction form
    280,105.64/386,545.70 = 152,781.16/x
  3. Step 3: Cross multiply
    280,105.64x = 386,545.70 × 152,781.16
  4. Step 4: Simplify right side
    280,105.64x = 59,056,900,439.01
  5. Step 5: Solve for x
    x = 59,056,900,439.01/280,105.64
  6. Step 6: Final answer
    x = 210,837.96

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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.