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Finding the Fourth Proportional to 425,190.76, 586,414.20 and 310,340.32

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Solution

The fourth proportional to 425,190.76, 586,414.20 and 310,340.32 is: 428,014.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,190.76 : 586,414.20 = 310,340.32 : x
  2. Step 2: Convert to fraction form
    425,190.76/586,414.20 = 310,340.32/x
  3. Step 3: Cross multiply
    425,190.76x = 586,414.20 × 310,340.32
  4. Step 4: Simplify right side
    425,190.76x = 181,987,970,480.54
  5. Step 5: Solve for x
    x = 181,987,970,480.54/425,190.76
  6. Step 6: Final answer
    x = 428,014.88

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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.