Home / 399,301.12-551,036.54-218,014.62

Finding the Fourth Proportional to 399,301.12, 551,036.54 and 218,014.62

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Solution

The fourth proportional to 399,301.12, 551,036.54 and 218,014.62 is: 300,860.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,301.12 : 551,036.54 = 218,014.62 : x
  2. Step 2: Convert to fraction form
    399,301.12/551,036.54 = 218,014.62/x
  3. Step 3: Cross multiply
    399,301.12x = 551,036.54 × 218,014.62
  4. Step 4: Simplify right side
    399,301.12x = 120,134,021,874.22
  5. Step 5: Solve for x
    x = 120,134,021,874.22/399,301.12
  6. Step 6: Final answer
    x = 300,860.72

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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.