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Finding the Fourth Proportional to 442,989.86, 664,550 and 143,370.86

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Solution

The fourth proportional to 442,989.86, 664,550 and 143,370.86 is: 215,077.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,989.86 : 664,550 = 143,370.86 : x
  2. Step 2: Convert to fraction form
    442,989.86/664,550 = 143,370.86/x
  3. Step 3: Cross multiply
    442,989.86x = 664,550 × 143,370.86
  4. Step 4: Simplify right side
    442,989.86x = 95,277,105,013.00
  5. Step 5: Solve for x
    x = 95,277,105,013.00/442,989.86
  6. Step 6: Final answer
    x = 215,077.39

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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.