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Finding the Fourth Proportional to 203,360.76, 280,635.10 and 112,714.81

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Solution

The fourth proportional to 203,360.76, 280,635.10 and 112,714.81 is: 155,544.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,360.76 : 280,635.10 = 112,714.81 : x
  2. Step 2: Convert to fraction form
    203,360.76/280,635.10 = 112,714.81/x
  3. Step 3: Cross multiply
    203,360.76x = 280,635.10 × 112,714.81
  4. Step 4: Simplify right side
    203,360.76x = 31,631,730,992.46
  5. Step 5: Solve for x
    x = 31,631,730,992.46/203,360.76
  6. Step 6: Final answer
    x = 155,544.91

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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.