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Finding the Fourth Proportional to 721,472.64, 1,082,345.04 and 222,720

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Solution

The fourth proportional to 721,472.64, 1,082,345.04 and 222,720 is: 334,122.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,472.64 : 1,082,345.04 = 222,720 : x
  2. Step 2: Convert to fraction form
    721,472.64/1,082,345.04 = 222,720/x
  3. Step 3: Cross multiply
    721,472.64x = 1,082,345.04 × 222,720
  4. Step 4: Simplify right side
    721,472.64x = 241,059,887,308.80
  5. Step 5: Solve for x
    x = 241,059,887,308.80/721,472.64
  6. Step 6: Final answer
    x = 334,122.01

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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.