Home / 331,686.20-497,237.70-198,619.40

Finding the Fourth Proportional to 331,686.20, 497,237.70 and 198,619.40

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Solution

The fourth proportional to 331,686.20, 497,237.70 and 198,619.40 is: 297,754.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,686.20 : 497,237.70 = 198,619.40 : x
  2. Step 2: Convert to fraction form
    331,686.20/497,237.70 = 198,619.40/x
  3. Step 3: Cross multiply
    331,686.20x = 497,237.70 × 198,619.40
  4. Step 4: Simplify right side
    331,686.20x = 98,761,053,631.38
  5. Step 5: Solve for x
    x = 98,761,053,631.38/331,686.20
  6. Step 6: Final answer
    x = 297,754.48

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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.