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Finding the Fourth Proportional to 253,240.82, 379,720.99 and 103,586.20

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Solution

The fourth proportional to 253,240.82, 379,720.99 and 103,586.20 is: 155,321.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,240.82 : 379,720.99 = 103,586.20 : x
  2. Step 2: Convert to fraction form
    253,240.82/379,720.99 = 103,586.20/x
  3. Step 3: Cross multiply
    253,240.82x = 379,720.99 × 103,586.20
  4. Step 4: Simplify right side
    253,240.82x = 39,333,853,206.07
  5. Step 5: Solve for x
    x = 39,333,853,206.07/253,240.82
  6. Step 6: Final answer
    x = 155,321.93

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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.