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Finding the Fourth Proportional to 268,833.78, 403,254.63 and 69,149.70

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Solution

The fourth proportional to 268,833.78, 403,254.63 and 69,149.70 is: 103,725.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,833.78 : 403,254.63 = 69,149.70 : x
  2. Step 2: Convert to fraction form
    268,833.78/403,254.63 = 69,149.70/x
  3. Step 3: Cross multiply
    268,833.78x = 403,254.63 × 69,149.70
  4. Step 4: Simplify right side
    268,833.78x = 27,884,936,688.11
  5. Step 5: Solve for x
    x = 27,884,936,688.11/268,833.78
  6. Step 6: Final answer
    x = 103,725.57

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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.