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Finding the Fourth Proportional to 407,087.04, 561,773.28 and 225,799.20

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Solution

The fourth proportional to 407,087.04, 561,773.28 and 225,799.20 is: 311,599.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,087.04 : 561,773.28 = 225,799.20 : x
  2. Step 2: Convert to fraction form
    407,087.04/561,773.28 = 225,799.20/x
  3. Step 3: Cross multiply
    407,087.04x = 561,773.28 × 225,799.20
  4. Step 4: Simplify right side
    407,087.04x = 126,847,957,205.38
  5. Step 5: Solve for x
    x = 126,847,957,205.38/407,087.04
  6. Step 6: Final answer
    x = 311,599.10

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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.