Home / 386,251.20-579,434.40-136,913.60

Finding the Fourth Proportional to 386,251.20, 579,434.40 and 136,913.60

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Solution

The fourth proportional to 386,251.20, 579,434.40 and 136,913.60 is: 205,390.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,251.20 : 579,434.40 = 136,913.60 : x
  2. Step 2: Convert to fraction form
    386,251.20/579,434.40 = 136,913.60/x
  3. Step 3: Cross multiply
    386,251.20x = 579,434.40 × 136,913.60
  4. Step 4: Simplify right side
    386,251.20x = 79,332,449,667.84
  5. Step 5: Solve for x
    x = 79,332,449,667.84/386,251.20
  6. Step 6: Final answer
    x = 205,390.82

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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.