Home / 386,377.29-579,156.89-129,965.77

Finding the Fourth Proportional to 386,377.29, 579,156.89 and 129,965.77

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Solution

The fourth proportional to 386,377.29, 579,156.89 and 129,965.77 is: 194,811.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,377.29 : 579,156.89 = 129,965.77 : x
  2. Step 2: Convert to fraction form
    386,377.29/579,156.89 = 129,965.77/x
  3. Step 3: Cross multiply
    386,377.29x = 579,156.89 × 129,965.77
  4. Step 4: Simplify right side
    386,377.29x = 75,270,571,721.14
  5. Step 5: Solve for x
    x = 75,270,571,721.14/386,377.29
  6. Step 6: Final answer
    x = 194,811.06

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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.