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Finding the Fourth Proportional to 485,251.47, 669,637.98 and 270,386.97

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Solution

The fourth proportional to 485,251.47, 669,637.98 and 270,386.97 is: 373,128.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,251.47 : 669,637.98 = 270,386.97 : x
  2. Step 2: Convert to fraction form
    485,251.47/669,637.98 = 270,386.97/x
  3. Step 3: Cross multiply
    485,251.47x = 669,637.98 × 270,386.97
  4. Step 4: Simplify right side
    485,251.47x = 181,061,384,409.12
  5. Step 5: Solve for x
    x = 181,061,384,409.12/485,251.47
  6. Step 6: Final answer
    x = 373,128.98

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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.