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Finding the Fourth Proportional to 269,572.95, 404,290.20 and 79,988.47

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Solution

The fourth proportional to 269,572.95, 404,290.20 and 79,988.47 is: 119,962.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,572.95 : 404,290.20 = 79,988.47 : x
  2. Step 2: Convert to fraction form
    269,572.95/404,290.20 = 79,988.47/x
  3. Step 3: Cross multiply
    269,572.95x = 404,290.20 × 79,988.47
  4. Step 4: Simplify right side
    269,572.95x = 32,338,553,823.23
  5. Step 5: Solve for x
    x = 32,338,553,823.23/269,572.95
  6. Step 6: Final answer
    x = 119,962.16

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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.