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Finding the Fourth Proportional to 203,363.40, 280,658.30 and 112,747.80

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Solution

The fourth proportional to 203,363.40, 280,658.30 and 112,747.80 is: 155,601.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,363.40 : 280,658.30 = 112,747.80 : x
  2. Step 2: Convert to fraction form
    203,363.40/280,658.30 = 112,747.80/x
  3. Step 3: Cross multiply
    203,363.40x = 280,658.30 × 112,747.80
  4. Step 4: Simplify right side
    203,363.40x = 31,643,605,876.74
  5. Step 5: Solve for x
    x = 31,643,605,876.74/203,363.40
  6. Step 6: Final answer
    x = 155,601.28

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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.