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Finding the Fourth Proportional to 485,542.64, 670,097.88 and 270,717.68

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Solution

The fourth proportional to 485,542.64, 670,097.88 and 270,717.68 is: 373,617.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,542.64 : 670,097.88 = 270,717.68 : x
  2. Step 2: Convert to fraction form
    485,542.64/670,097.88 = 270,717.68/x
  3. Step 3: Cross multiply
    485,542.64x = 670,097.88 × 270,717.68
  4. Step 4: Simplify right side
    485,542.64x = 181,407,343,446.52
  5. Step 5: Solve for x
    x = 181,407,343,446.52/485,542.64
  6. Step 6: Final answer
    x = 373,617.74

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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.