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Finding the Fourth Proportional to 647,234.70, 970,160.85 and 247,721.10

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Solution

The fourth proportional to 647,234.70, 970,160.85 and 247,721.10 is: 371,317.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,234.70 : 970,160.85 = 247,721.10 : x
  2. Step 2: Convert to fraction form
    647,234.70/970,160.85 = 247,721.10/x
  3. Step 3: Cross multiply
    647,234.70x = 970,160.85 × 247,721.10
  4. Step 4: Simplify right side
    647,234.70x = 240,329,312,938.94
  5. Step 5: Solve for x
    x = 240,329,312,938.94/647,234.70
  6. Step 6: Final answer
    x = 371,317.10

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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.