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Finding the Fourth Proportional to 269,101.12, 371,354.88 and 155,934.40

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Solution

The fourth proportional to 269,101.12, 371,354.88 and 155,934.40 is: 215,186.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,101.12 : 371,354.88 = 155,934.40 : x
  2. Step 2: Convert to fraction form
    269,101.12/371,354.88 = 155,934.40/x
  3. Step 3: Cross multiply
    269,101.12x = 371,354.88 × 155,934.40
  4. Step 4: Simplify right side
    269,101.12x = 57,907,000,399.87
  5. Step 5: Solve for x
    x = 57,907,000,399.87/269,101.12
  6. Step 6: Final answer
    x = 215,186.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.