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Finding the Fourth Proportional to 345,959.20, 518,529.20 and 146,279.20

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Solution

The fourth proportional to 345,959.20, 518,529.20 and 146,279.20 is: 219,245.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,959.20 : 518,529.20 = 146,279.20 : x
  2. Step 2: Convert to fraction form
    345,959.20/518,529.20 = 146,279.20/x
  3. Step 3: Cross multiply
    345,959.20x = 518,529.20 × 146,279.20
  4. Step 4: Simplify right side
    345,959.20x = 75,850,036,552.64
  5. Step 5: Solve for x
    x = 75,850,036,552.64/345,959.20
  6. Step 6: Final answer
    x = 219,245.61

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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.