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Finding the Fourth Proportional to 203,315.61, 280,576.27 and 112,673.11

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Solution

The fourth proportional to 203,315.61, 280,576.27 and 112,673.11 is: 155,489.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,315.61 : 280,576.27 = 112,673.11 : x
  2. Step 2: Convert to fraction form
    203,315.61/280,576.27 = 112,673.11/x
  3. Step 3: Cross multiply
    203,315.61x = 280,576.27 × 112,673.11
  4. Step 4: Simplify right side
    203,315.61x = 31,613,400,933.10
  5. Step 5: Solve for x
    x = 31,613,400,933.10/203,315.61
  6. Step 6: Final answer
    x = 155,489.30

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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.