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Finding the Fourth Proportional to 287,373.97, 396,588.34 and 160,049.57

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Solution

The fourth proportional to 287,373.97, 396,588.34 and 160,049.57 is: 220,875.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,373.97 : 396,588.34 = 160,049.57 : x
  2. Step 2: Convert to fraction form
    287,373.97/396,588.34 = 160,049.57/x
  3. Step 3: Cross multiply
    287,373.97x = 396,588.34 × 160,049.57
  4. Step 4: Simplify right side
    287,373.97x = 63,473,790,500.82
  5. Step 5: Solve for x
    x = 63,473,790,500.82/287,373.97
  6. Step 6: Final answer
    x = 220,875.23

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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.