Home / 287,727,760.20-431,591,640.30-105,951,318.60

Finding the Fourth Proportional to 287,727,760.20, 431,591,640.30 and 105,951,318.60

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Solution

The fourth proportional to 287,727,760.20, 431,591,640.30 and 105,951,318.60 is: 158,926,977.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,727,760.20 : 431,591,640.30 = 105,951,318.60 : x
  2. Step 2: Convert to fraction form
    287,727,760.20/431,591,640.30 = 105,951,318.60/x
  3. Step 3: Cross multiply
    287,727,760.20x = 431,591,640.30 × 105,951,318.60
  4. Step 4: Simplify right side
    287,727,760.20x = 45,727,703,386,521,896
  5. Step 5: Solve for x
    x = 45,727,703,386,521,896/287,727,760.20
  6. Step 6: Final answer
    x = 158,926,977.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.