Home / 399,514.20-551,325.87-218,226.06

Finding the Fourth Proportional to 399,514.20, 551,325.87 and 218,226.06

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Solution

The fourth proportional to 399,514.20, 551,325.87 and 218,226.06 is: 301,149.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,514.20 : 551,325.87 = 218,226.06 : x
  2. Step 2: Convert to fraction form
    399,514.20/551,325.87 = 218,226.06/x
  3. Step 3: Cross multiply
    399,514.20x = 551,325.87 × 218,226.06
  4. Step 4: Simplify right side
    399,514.20x = 120,313,672,386.17
  5. Step 5: Solve for x
    x = 120,313,672,386.17/399,514.20
  6. Step 6: Final answer
    x = 301,149.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.