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Finding the Fourth Proportional to 485,718.58, 670,275.86 and 267,926.71

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Solution

The fourth proportional to 485,718.58, 670,275.86 and 267,926.71 is: 369,730.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,718.58 : 670,275.86 = 267,926.71 : x
  2. Step 2: Convert to fraction form
    485,718.58/670,275.86 = 267,926.71/x
  3. Step 3: Cross multiply
    485,718.58x = 670,275.86 × 267,926.71
  4. Step 4: Simplify right side
    485,718.58x = 179,584,807,595.90
  5. Step 5: Solve for x
    x = 179,584,807,595.90/485,718.58
  6. Step 6: Final answer
    x = 369,730.16

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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.