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Finding the Fourth Proportional to 203,587.65, 280,951.27 and 112,943.61

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Solution

The fourth proportional to 203,587.65, 280,951.27 and 112,943.61 is: 155,862.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,587.65 : 280,951.27 = 112,943.61 : x
  2. Step 2: Convert to fraction form
    203,587.65/280,951.27 = 112,943.61/x
  3. Step 3: Cross multiply
    203,587.65x = 280,951.27 × 112,943.61
  4. Step 4: Simplify right side
    203,587.65x = 31,731,649,263.13
  5. Step 5: Solve for x
    x = 31,731,649,263.13/203,587.65
  6. Step 6: Final answer
    x = 155,862.35

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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.