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Finding the Fourth Proportional to 203,308.10, 280,574.10 and 112,663.86

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Solution

The fourth proportional to 203,308.10, 280,574.10 and 112,663.86 is: 155,481.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,308.10 : 280,574.10 = 112,663.86 : x
  2. Step 2: Convert to fraction form
    203,308.10/280,574.10 = 112,663.86/x
  3. Step 3: Cross multiply
    203,308.10x = 280,574.10 × 112,663.86
  4. Step 4: Simplify right side
    203,308.10x = 31,610,561,122.03
  5. Step 5: Solve for x
    x = 31,610,561,122.03/203,308.10
  6. Step 6: Final answer
    x = 155,481.07

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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.