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Finding the Fourth Proportional to 278,360.55, 417,401.10 and 136,216.49

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Solution

The fourth proportional to 278,360.55, 417,401.10 and 136,216.49 is: 204,256.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,360.55 : 417,401.10 = 136,216.49 : x
  2. Step 2: Convert to fraction form
    278,360.55/417,401.10 = 136,216.49/x
  3. Step 3: Cross multiply
    278,360.55x = 417,401.10 × 136,216.49
  4. Step 4: Simplify right side
    278,360.55x = 56,856,910,677.13
  5. Step 5: Solve for x
    x = 56,856,910,677.13/278,360.55
  6. Step 6: Final answer
    x = 204,256.35

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1.5x scale

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.