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Finding the Fourth Proportional to 381,718.80, 572,578.20 and 240,001.20

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Solution

The fourth proportional to 381,718.80, 572,578.20 and 240,001.20 is: 360,001.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,718.80 : 572,578.20 = 240,001.20 : x
  2. Step 2: Convert to fraction form
    381,718.80/572,578.20 = 240,001.20/x
  3. Step 3: Cross multiply
    381,718.80x = 572,578.20 × 240,001.20
  4. Step 4: Simplify right side
    381,718.80x = 137,419,455,093.84
  5. Step 5: Solve for x
    x = 137,419,455,093.84/381,718.80
  6. Step 6: Final answer
    x = 360,001.80

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.