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Finding the Fourth Proportional to 275,720.10, 413,580.15 and 251,225.70

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Solution

The fourth proportional to 275,720.10, 413,580.15 and 251,225.70 is: 376,838.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,720.10 : 413,580.15 = 251,225.70 : x
  2. Step 2: Convert to fraction form
    275,720.10/413,580.15 = 251,225.70/x
  3. Step 3: Cross multiply
    275,720.10x = 413,580.15 × 251,225.70
  4. Step 4: Simplify right side
    275,720.10x = 103,901,962,689.86
  5. Step 5: Solve for x
    x = 103,901,962,689.86/275,720.10
  6. Step 6: Final answer
    x = 376,838.55

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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.