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Finding the Fourth Proportional to 325,387.20, 487,850.40 and 125,630.40

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Solution

The fourth proportional to 325,387.20, 487,850.40 and 125,630.40 is: 188,356.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,387.20 : 487,850.40 = 125,630.40 : x
  2. Step 2: Convert to fraction form
    325,387.20/487,850.40 = 125,630.40/x
  3. Step 3: Cross multiply
    325,387.20x = 487,850.40 × 125,630.40
  4. Step 4: Simplify right side
    325,387.20x = 61,288,840,892.16
  5. Step 5: Solve for x
    x = 61,288,840,892.16/325,387.20
  6. Step 6: Final answer
    x = 188,356.64

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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.