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Finding the Fourth Proportional to 354,472.02, 489,250.80 and 225,385.56

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Solution

The fourth proportional to 354,472.02, 489,250.80 and 225,385.56 is: 311,082.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,472.02 : 489,250.80 = 225,385.56 : x
  2. Step 2: Convert to fraction form
    354,472.02/489,250.80 = 225,385.56/x
  3. Step 3: Cross multiply
    354,472.02x = 489,250.80 × 225,385.56
  4. Step 4: Simplify right side
    354,472.02x = 110,270,065,538.45
  5. Step 5: Solve for x
    x = 110,270,065,538.45/354,472.02
  6. Step 6: Final answer
    x = 311,082.57

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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.