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Finding the Fourth Proportional to 269,430.70, 403,708.65 and 169,411.90

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Solution

The fourth proportional to 269,430.70, 403,708.65 and 169,411.90 is: 253,842.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,430.70 : 403,708.65 = 169,411.90 : x
  2. Step 2: Convert to fraction form
    269,430.70/403,708.65 = 169,411.90/x
  3. Step 3: Cross multiply
    269,430.70x = 403,708.65 × 169,411.90
  4. Step 4: Simplify right side
    269,430.70x = 68,393,049,442.94
  5. Step 5: Solve for x
    x = 68,393,049,442.94/269,430.70
  6. Step 6: Final answer
    x = 253,842.82

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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.