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Finding the Fourth Proportional to 492,340.80, 738,500.40 and 137,344.80

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Solution

The fourth proportional to 492,340.80, 738,500.40 and 137,344.80 is: 206,014.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,340.80 : 738,500.40 = 137,344.80 : x
  2. Step 2: Convert to fraction form
    492,340.80/738,500.40 = 137,344.80/x
  3. Step 3: Cross multiply
    492,340.80x = 738,500.40 × 137,344.80
  4. Step 4: Simplify right side
    492,340.80x = 101,429,189,737.92
  5. Step 5: Solve for x
    x = 101,429,189,737.92/492,340.80
  6. Step 6: Final answer
    x = 206,014.19

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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.