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Finding the Fourth Proportional to 253,321.65, 379,859.76 and 103,502.43

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Solution

The fourth proportional to 253,321.65, 379,859.76 and 103,502.43 is: 155,203.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,321.65 : 379,859.76 = 103,502.43 : x
  2. Step 2: Convert to fraction form
    253,321.65/379,859.76 = 103,502.43/x
  3. Step 3: Cross multiply
    253,321.65x = 379,859.76 × 103,502.43
  4. Step 4: Simplify right side
    253,321.65x = 39,316,408,219.22
  5. Step 5: Solve for x
    x = 39,316,408,219.22/253,321.65
  6. Step 6: Final answer
    x = 155,203.51

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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.