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Finding the Fourth Proportional to 407,878.20, 612,206.46 and 250,414.20

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Solution

The fourth proportional to 407,878.20, 612,206.46 and 250,414.20 is: 375,860.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,878.20 : 612,206.46 = 250,414.20 : x
  2. Step 2: Convert to fraction form
    407,878.20/612,206.46 = 250,414.20/x
  3. Step 3: Cross multiply
    407,878.20x = 612,206.46 × 250,414.20
  4. Step 4: Simplify right side
    407,878.20x = 153,305,190,915.73
  5. Step 5: Solve for x
    x = 153,305,190,915.73/407,878.20
  6. Step 6: Final answer
    x = 375,860.22

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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.