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Finding the Fourth Proportional to 485,847.51, 670,470.75 and 271,001.49

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Solution

The fourth proportional to 485,847.51, 670,470.75 and 271,001.49 is: 373,982.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,847.51 : 670,470.75 = 271,001.49 : x
  2. Step 2: Convert to fraction form
    485,847.51/670,470.75 = 271,001.49/x
  3. Step 3: Cross multiply
    485,847.51x = 670,470.75 × 271,001.49
  4. Step 4: Simplify right side
    485,847.51x = 181,698,572,251.42
  5. Step 5: Solve for x
    x = 181,698,572,251.42/485,847.51
  6. Step 6: Final answer
    x = 373,982.72

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1.5x scale

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.