Home / 386,320.20-579,471.45-102,030.78

Finding the Fourth Proportional to 386,320.20, 579,471.45 and 102,030.78

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Solution

The fourth proportional to 386,320.20, 579,471.45 and 102,030.78 is: 153,043.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,320.20 : 579,471.45 = 102,030.78 : x
  2. Step 2: Convert to fraction form
    386,320.20/579,471.45 = 102,030.78/x
  3. Step 3: Cross multiply
    386,320.20x = 579,471.45 × 102,030.78
  4. Step 4: Simplify right side
    386,320.20x = 59,123,924,031.23
  5. Step 5: Solve for x
    x = 59,123,924,031.23/386,320.20
  6. Step 6: Final answer
    x = 153,043.83

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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.