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Finding the Fourth Proportional to 290,227.04, 435,342.72 and 79,876.56

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Solution

The fourth proportional to 290,227.04, 435,342.72 and 79,876.56 is: 119,815.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,227.04 : 435,342.72 = 79,876.56 : x
  2. Step 2: Convert to fraction form
    290,227.04/435,342.72 = 79,876.56/x
  3. Step 3: Cross multiply
    290,227.04x = 435,342.72 × 79,876.56
  4. Step 4: Simplify right side
    290,227.04x = 34,773,678,894.64
  5. Step 5: Solve for x
    x = 34,773,678,894.64/290,227.04
  6. Step 6: Final answer
    x = 119,815.43

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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.