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Finding the Fourth Proportional to 203,587.71, 280,951.36 and 112,943.67

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Solution

The fourth proportional to 203,587.71, 280,951.36 and 112,943.67 is: 155,862.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,587.71 : 280,951.36 = 112,943.67 : x
  2. Step 2: Convert to fraction form
    203,587.71/280,951.36 = 112,943.67/x
  3. Step 3: Cross multiply
    203,587.71x = 280,951.36 × 112,943.67
  4. Step 4: Simplify right side
    203,587.71x = 31,731,676,353.96
  5. Step 5: Solve for x
    x = 31,731,676,353.96/203,587.71
  6. Step 6: Final answer
    x = 155,862.44

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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.