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Finding the Fourth Proportional to 279,225.78, 418,833.27 and 79,547.46

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Solution

The fourth proportional to 279,225.78, 418,833.27 and 79,547.46 is: 119,319.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,225.78 : 418,833.27 = 79,547.46 : x
  2. Step 2: Convert to fraction form
    279,225.78/418,833.27 = 79,547.46/x
  3. Step 3: Cross multiply
    279,225.78x = 418,833.27 × 79,547.46
  4. Step 4: Simplify right side
    279,225.78x = 33,317,122,791.99
  5. Step 5: Solve for x
    x = 33,317,122,791.99/279,225.78
  6. Step 6: Final answer
    x = 119,319.65

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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.