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Finding the Fourth Proportional to 268,447.48, 402,661.94 and 68,769.82

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Solution

The fourth proportional to 268,447.48, 402,661.94 and 68,769.82 is: 103,152.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,447.48 : 402,661.94 = 68,769.82 : x
  2. Step 2: Convert to fraction form
    268,447.48/402,661.94 = 68,769.82/x
  3. Step 3: Cross multiply
    268,447.48x = 402,661.94 × 68,769.82
  4. Step 4: Simplify right side
    268,447.48x = 27,690,989,134.65
  5. Step 5: Solve for x
    x = 27,690,989,134.65/268,447.48
  6. Step 6: Final answer
    x = 103,152.35

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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.