Home / 279,115.10-418,543.05-121,262.30

Finding the Fourth Proportional to 279,115.10, 418,543.05 and 121,262.30

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Solution

The fourth proportional to 279,115.10, 418,543.05 and 121,262.30 is: 181,837.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,115.10 : 418,543.05 = 121,262.30 : x
  2. Step 2: Convert to fraction form
    279,115.10/418,543.05 = 121,262.30/x
  3. Step 3: Cross multiply
    279,115.10x = 418,543.05 × 121,262.30
  4. Step 4: Simplify right side
    279,115.10x = 50,753,492,892.02
  5. Step 5: Solve for x
    x = 50,753,492,892.02/279,115.10
  6. Step 6: Final answer
    x = 181,837.14

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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.