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Finding the Fourth Proportional to 253,240.57, 379,720.62 and 103,585.95

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Solution

The fourth proportional to 253,240.57, 379,720.62 and 103,585.95 is: 155,321.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,240.57 : 379,720.62 = 103,585.95 : x
  2. Step 2: Convert to fraction form
    253,240.57/379,720.62 = 103,585.95/x
  3. Step 3: Cross multiply
    253,240.57x = 379,720.62 × 103,585.95
  4. Step 4: Simplify right side
    253,240.57x = 39,333,720,639.36
  5. Step 5: Solve for x
    x = 39,333,720,639.36/253,240.57
  6. Step 6: Final answer
    x = 155,321.56

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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.