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Finding the Fourth Proportional to 381,998.80, 575,217.79 and 282,861.28

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Solution

The fourth proportional to 381,998.80, 575,217.79 and 282,861.28 is: 425,935.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,998.80 : 575,217.79 = 282,861.28 : x
  2. Step 2: Convert to fraction form
    381,998.80/575,217.79 = 282,861.28/x
  3. Step 3: Cross multiply
    381,998.80x = 575,217.79 × 282,861.28
  4. Step 4: Simplify right side
    381,998.80x = 162,706,840,358.17
  5. Step 5: Solve for x
    x = 162,706,840,358.17/381,998.80
  6. Step 6: Final answer
    x = 425,935.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.