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Finding the Fourth Proportional to 203,869.40, 305,852.70 and 98,601.80

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Solution

The fourth proportional to 203,869.40, 305,852.70 and 98,601.80 is: 147,926.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,869.40 : 305,852.70 = 98,601.80 : x
  2. Step 2: Convert to fraction form
    203,869.40/305,852.70 = 98,601.80/x
  3. Step 3: Cross multiply
    203,869.40x = 305,852.70 × 98,601.80
  4. Step 4: Simplify right side
    203,869.40x = 30,157,626,754.86
  5. Step 5: Solve for x
    x = 30,157,626,754.86/203,869.40
  6. Step 6: Final answer
    x = 147,926.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.