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Finding the Fourth Proportional to 239,795.80, 359,693.70 and 82,000.60

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Solution

The fourth proportional to 239,795.80, 359,693.70 and 82,000.60 is: 123,000.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,795.80 : 359,693.70 = 82,000.60 : x
  2. Step 2: Convert to fraction form
    239,795.80/359,693.70 = 82,000.60/x
  3. Step 3: Cross multiply
    239,795.80x = 359,693.70 × 82,000.60
  4. Step 4: Simplify right side
    239,795.80x = 29,495,099,216.22
  5. Step 5: Solve for x
    x = 29,495,099,216.22/239,795.80
  6. Step 6: Final answer
    x = 123,000.90

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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.