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Finding the Fourth Proportional to 203,253.55, 280,466.78 and 112,586.90

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Solution

The fourth proportional to 203,253.55, 280,466.78 and 112,586.90 is: 155,357.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,253.55 : 280,466.78 = 112,586.90 : x
  2. Step 2: Convert to fraction form
    203,253.55/280,466.78 = 112,586.90/x
  3. Step 3: Cross multiply
    203,253.55x = 280,466.78 × 112,586.90
  4. Step 4: Simplify right side
    203,253.55x = 31,576,885,451.41
  5. Step 5: Solve for x
    x = 31,576,885,451.41/203,253.55
  6. Step 6: Final answer
    x = 155,357.12

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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.