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Finding the Fourth Proportional to 492,308.05, 738,396.45 and 137,292.34

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Solution

The fourth proportional to 492,308.05, 738,396.45 and 137,292.34 is: 205,920.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,308.05 : 738,396.45 = 137,292.34 : x
  2. Step 2: Convert to fraction form
    492,308.05/738,396.45 = 137,292.34/x
  3. Step 3: Cross multiply
    492,308.05x = 738,396.45 × 137,292.34
  4. Step 4: Simplify right side
    492,308.05x = 101,376,174,622.20
  5. Step 5: Solve for x
    x = 101,376,174,622.20/492,308.05
  6. Step 6: Final answer
    x = 205,920.21

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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.