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Finding the Fourth Proportional to 269,442.20, 403,725.90 and 169,423.40

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Solution

The fourth proportional to 269,442.20, 403,725.90 and 169,423.40 is: 253,860.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,442.20 : 403,725.90 = 169,423.40 : x
  2. Step 2: Convert to fraction form
    269,442.20/403,725.90 = 169,423.40/x
  3. Step 3: Cross multiply
    269,442.20x = 403,725.90 × 169,423.40
  4. Step 4: Simplify right side
    269,442.20x = 68,400,614,646.06
  5. Step 5: Solve for x
    x = 68,400,614,646.06/269,442.20
  6. Step 6: Final answer
    x = 253,860.07

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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.