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Finding the Fourth Proportional to 203,493.14, 280,820.55 and 112,862.96

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Solution

The fourth proportional to 203,493.14, 280,820.55 and 112,862.96 is: 155,750.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,493.14 : 280,820.55 = 112,862.96 : x
  2. Step 2: Convert to fraction form
    203,493.14/280,820.55 = 112,862.96/x
  3. Step 3: Cross multiply
    203,493.14x = 280,820.55 × 112,862.96
  4. Step 4: Simplify right side
    203,493.14x = 31,694,238,501.83
  5. Step 5: Solve for x
    x = 31,694,238,501.83/203,493.14
  6. Step 6: Final answer
    x = 155,750.89

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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.