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Finding the Fourth Proportional to 203,123.00, 280,309.55 and 112,478.96

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Solution

The fourth proportional to 203,123.00, 280,309.55 and 112,478.96 is: 155,220.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,123.00 : 280,309.55 = 112,478.96 : x
  2. Step 2: Convert to fraction form
    203,123.00/280,309.55 = 112,478.96/x
  3. Step 3: Cross multiply
    203,123.00x = 280,309.55 × 112,478.96
  4. Step 4: Simplify right side
    203,123.00x = 31,528,926,800.45
  5. Step 5: Solve for x
    x = 31,528,926,800.45/203,123.00
  6. Step 6: Final answer
    x = 155,220.86

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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.