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Finding the Fourth Proportional to 287,373.45, 396,587.61 and 160,049.01

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Solution

The fourth proportional to 287,373.45, 396,587.61 and 160,049.01 is: 220,874.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,373.45 : 396,587.61 = 160,049.01 : x
  2. Step 2: Convert to fraction form
    287,373.45/396,587.61 = 160,049.01/x
  3. Step 3: Cross multiply
    287,373.45x = 396,587.61 × 160,049.01
  4. Step 4: Simplify right side
    287,373.45x = 63,473,454,358.77
  5. Step 5: Solve for x
    x = 63,473,454,358.77/287,373.45
  6. Step 6: Final answer
    x = 220,874.46

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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.