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Finding the Fourth Proportional to 492,343.20, 738,069.30 and 342,655.20

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Solution

The fourth proportional to 492,343.20, 738,069.30 and 342,655.20 is: 513,672.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,343.20 : 738,069.30 = 342,655.20 : x
  2. Step 2: Convert to fraction form
    492,343.20/738,069.30 = 342,655.20/x
  3. Step 3: Cross multiply
    492,343.20x = 738,069.30 × 342,655.20
  4. Step 4: Simplify right side
    492,343.20x = 252,903,283,605.36
  5. Step 5: Solve for x
    x = 252,903,283,605.36/492,343.20
  6. Step 6: Final answer
    x = 513,672.75

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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.