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Finding the Fourth Proportional to 442,864.76, 664,402.60 and 143,345.40

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Solution

The fourth proportional to 442,864.76, 664,402.60 and 143,345.40 is: 215,052.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,864.76 : 664,402.60 = 143,345.40 : x
  2. Step 2: Convert to fraction form
    442,864.76/664,402.60 = 143,345.40/x
  3. Step 3: Cross multiply
    442,864.76x = 664,402.60 × 143,345.40
  4. Step 4: Simplify right side
    442,864.76x = 95,239,056,458.04
  5. Step 5: Solve for x
    x = 95,239,056,458.04/442,864.76
  6. Step 6: Final answer
    x = 215,052.24

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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.