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Finding the Fourth Proportional to 203,575.30, 280,935.60 and 112,937.20

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Solution

The fourth proportional to 203,575.30, 280,935.60 and 112,937.20 is: 155,854.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,575.30 : 280,935.60 = 112,937.20 : x
  2. Step 2: Convert to fraction form
    203,575.30/280,935.60 = 112,937.20/x
  3. Step 3: Cross multiply
    203,575.30x = 280,935.60 × 112,937.20
  4. Step 4: Simplify right side
    203,575.30x = 31,728,080,044.32
  5. Step 5: Solve for x
    x = 31,728,080,044.32/203,575.30
  6. Step 6: Final answer
    x = 155,854.27

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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.