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Finding the Fourth Proportional to 295,938.80, 443,908.20 and 129,726.80

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Solution

The fourth proportional to 295,938.80, 443,908.20 and 129,726.80 is: 194,590.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,938.80 : 443,908.20 = 129,726.80 : x
  2. Step 2: Convert to fraction form
    295,938.80/443,908.20 = 129,726.80/x
  3. Step 3: Cross multiply
    295,938.80x = 443,908.20 × 129,726.80
  4. Step 4: Simplify right side
    295,938.80x = 57,586,790,279.76
  5. Step 5: Solve for x
    x = 57,586,790,279.76/295,938.80
  6. Step 6: Final answer
    x = 194,590.20

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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.