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Finding the Fourth Proportional to 203,568.32, 280,901.60 and 112,901.57

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Solution

The fourth proportional to 203,568.32, 280,901.60 and 112,901.57 is: 155,791.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,568.32 : 280,901.60 = 112,901.57 : x
  2. Step 2: Convert to fraction form
    203,568.32/280,901.60 = 112,901.57/x
  3. Step 3: Cross multiply
    203,568.32x = 280,901.60 × 112,901.57
  4. Step 4: Simplify right side
    203,568.32x = 31,714,229,686.50
  5. Step 5: Solve for x
    x = 31,714,229,686.50/203,568.32
  6. Step 6: Final answer
    x = 155,791.58

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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.