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Finding the Fourth Proportional to 203,309.67, 280,573.49 and 112,657.15

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Solution

The fourth proportional to 203,309.67, 280,573.49 and 112,657.15 is: 155,470.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,309.67 : 280,573.49 = 112,657.15 : x
  2. Step 2: Convert to fraction form
    203,309.67/280,573.49 = 112,657.15/x
  3. Step 3: Cross multiply
    203,309.67x = 280,573.49 × 112,657.15
  4. Step 4: Simplify right side
    203,309.67x = 31,608,609,748.95
  5. Step 5: Solve for x
    x = 31,608,609,748.95/203,309.67
  6. Step 6: Final answer
    x = 155,470.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.