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Finding the Fourth Proportional to 242,611.30, 363,965.55 and 203,439.70

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Solution

The fourth proportional to 242,611.30, 363,965.55 and 203,439.70 is: 305,200.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,611.30 : 363,965.55 = 203,439.70 : x
  2. Step 2: Convert to fraction form
    242,611.30/363,965.55 = 203,439.70/x
  3. Step 3: Cross multiply
    242,611.30x = 363,965.55 × 203,439.70
  4. Step 4: Simplify right side
    242,611.30x = 74,045,042,302.34
  5. Step 5: Solve for x
    x = 74,045,042,302.34/242,611.30
  6. Step 6: Final answer
    x = 305,200.30

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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.