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Finding the Fourth Proportional to 203,458.67, 280,776.34 and 112,818.46

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Solution

The fourth proportional to 203,458.67, 280,776.34 and 112,818.46 is: 155,691.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,458.67 : 280,776.34 = 112,818.46 : x
  2. Step 2: Convert to fraction form
    203,458.67/280,776.34 = 112,818.46/x
  3. Step 3: Cross multiply
    203,458.67x = 280,776.34 × 112,818.46
  4. Step 4: Simplify right side
    203,458.67x = 31,676,754,283.24
  5. Step 5: Solve for x
    x = 31,676,754,283.24/203,458.67
  6. Step 6: Final answer
    x = 155,691.35

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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.