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Finding the Fourth Proportional to 325,310.60, 487,820.10 and 125,564.60

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Solution

The fourth proportional to 325,310.60, 487,820.10 and 125,564.60 is: 188,290.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,310.60 : 487,820.10 = 125,564.60 : x
  2. Step 2: Convert to fraction form
    325,310.60/487,820.10 = 125,564.60/x
  3. Step 3: Cross multiply
    325,310.60x = 487,820.10 × 125,564.60
  4. Step 4: Simplify right side
    325,310.60x = 61,252,935,728.46
  5. Step 5: Solve for x
    x = 61,252,935,728.46/325,310.60
  6. Step 6: Final answer
    x = 188,290.62

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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.