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Finding the Fourth Proportional to 287,648.97, 396,957.42 and 160,332.63

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Solution

The fourth proportional to 287,648.97, 396,957.42 and 160,332.63 is: 221,260.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,648.97 : 396,957.42 = 160,332.63 : x
  2. Step 2: Convert to fraction form
    287,648.97/396,957.42 = 160,332.63/x
  3. Step 3: Cross multiply
    287,648.97x = 396,957.42 × 160,332.63
  4. Step 4: Simplify right side
    287,648.97x = 63,645,227,146.61
  5. Step 5: Solve for x
    x = 63,645,227,146.61/287,648.97
  6. Step 6: Final answer
    x = 221,260.06

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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.