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Finding the Fourth Proportional to 485,847.52, 670,470.72 and 271,001.48

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Solution

The fourth proportional to 485,847.52, 670,470.72 and 271,001.48 is: 373,982.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,847.52 : 670,470.72 = 271,001.48 : x
  2. Step 2: Convert to fraction form
    485,847.52/670,470.72 = 271,001.48/x
  3. Step 3: Cross multiply
    485,847.52x = 670,470.72 × 271,001.48
  4. Step 4: Simplify right side
    485,847.52x = 181,698,557,416.67
  5. Step 5: Solve for x
    x = 181,698,557,416.67/485,847.52
  6. Step 6: Final answer
    x = 373,982.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.