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Finding the Fourth Proportional to 345,337.20, 518,005.80 and 252,025.20

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Solution

The fourth proportional to 345,337.20, 518,005.80 and 252,025.20 is: 378,037.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,337.20 : 518,005.80 = 252,025.20 : x
  2. Step 2: Convert to fraction form
    345,337.20/518,005.80 = 252,025.20/x
  3. Step 3: Cross multiply
    345,337.20x = 518,005.80 × 252,025.20
  4. Step 4: Simplify right side
    345,337.20x = 130,550,515,346.16
  5. Step 5: Solve for x
    x = 130,550,515,346.16/345,337.20
  6. Step 6: Final answer
    x = 378,037.80

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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.