Home / 331,619.20-497,623.20-121,278.40

Finding the Fourth Proportional to 331,619.20, 497,623.20 and 121,278.40

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Solution

The fourth proportional to 331,619.20, 497,623.20 and 121,278.40 is: 181,988.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,619.20 : 497,623.20 = 121,278.40 : x
  2. Step 2: Convert to fraction form
    331,619.20/497,623.20 = 121,278.40/x
  3. Step 3: Cross multiply
    331,619.20x = 497,623.20 × 121,278.40
  4. Step 4: Simplify right side
    331,619.20x = 60,350,945,498.88
  5. Step 5: Solve for x
    x = 60,350,945,498.88/331,619.20
  6. Step 6: Final answer
    x = 181,988.70

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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.