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Finding the Fourth Proportional to 324,631.60, 487,093.20 and 147,047.20

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Solution

The fourth proportional to 324,631.60, 487,093.20 and 147,047.20 is: 220,636.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,631.60 : 487,093.20 = 147,047.20 : x
  2. Step 2: Convert to fraction form
    324,631.60/487,093.20 = 147,047.20/x
  3. Step 3: Cross multiply
    324,631.60x = 487,093.20 × 147,047.20
  4. Step 4: Simplify right side
    324,631.60x = 71,625,691,199.04
  5. Step 5: Solve for x
    x = 71,625,691,199.04/324,631.60
  6. Step 6: Final answer
    x = 220,636.84

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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.