Home / 393,952.70-590,929.05-127,721.90

Finding the Fourth Proportional to 393,952.70, 590,929.05 and 127,721.90

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Solution

The fourth proportional to 393,952.70, 590,929.05 and 127,721.90 is: 191,582.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,952.70 : 590,929.05 = 127,721.90 : x
  2. Step 2: Convert to fraction form
    393,952.70/590,929.05 = 127,721.90/x
  3. Step 3: Cross multiply
    393,952.70x = 590,929.05 × 127,721.90
  4. Step 4: Simplify right side
    393,952.70x = 75,474,581,031.20
  5. Step 5: Solve for x
    x = 75,474,581,031.20/393,952.70
  6. Step 6: Final answer
    x = 191,582.85

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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.