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Finding the Fourth Proportional to 221,531.34, 332,214.93 and 79,354.47

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Solution

The fourth proportional to 221,531.34, 332,214.93 and 79,354.47 is: 119,002.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,531.34 : 332,214.93 = 79,354.47 : x
  2. Step 2: Convert to fraction form
    221,531.34/332,214.93 = 79,354.47/x
  3. Step 3: Cross multiply
    221,531.34x = 332,214.93 × 79,354.47
  4. Step 4: Simplify right side
    221,531.34x = 26,362,739,696.24
  5. Step 5: Solve for x
    x = 26,362,739,696.24/221,531.34
  6. Step 6: Final answer
    x = 119,002.30

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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.