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Finding the Fourth Proportional to 253,148.90, 379,723.71 and 103,389.22

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Solution

The fourth proportional to 253,148.90, 379,723.71 and 103,389.22 is: 155,083.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,148.90 : 379,723.71 = 103,389.22 : x
  2. Step 2: Convert to fraction form
    253,148.90/379,723.71 = 103,389.22/x
  3. Step 3: Cross multiply
    253,148.90x = 379,723.71 × 103,389.22
  4. Step 4: Simplify right side
    253,148.90x = 39,259,336,293.79
  5. Step 5: Solve for x
    x = 39,259,336,293.79/253,148.90
  6. Step 6: Final answer
    x = 155,083.97

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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.