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Finding the Fourth Proportional to 203,302.89, 280,559.63 and 112,660.36

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Solution

The fourth proportional to 203,302.89, 280,559.63 and 112,660.36 is: 155,472.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,302.89 : 280,559.63 = 112,660.36 : x
  2. Step 2: Convert to fraction form
    203,302.89/280,559.63 = 112,660.36/x
  3. Step 3: Cross multiply
    203,302.89x = 280,559.63 × 112,660.36
  4. Step 4: Simplify right side
    203,302.89x = 31,607,948,917.27
  5. Step 5: Solve for x
    x = 31,607,948,917.27/203,302.89
  6. Step 6: Final answer
    x = 155,472.21

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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.