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Finding the Fourth Proportional to 647,046.40, 970,108.80 and 247,532.80

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Solution

The fourth proportional to 647,046.40, 970,108.80 and 247,532.80 is: 371,122.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,046.40 : 970,108.80 = 247,532.80 : x
  2. Step 2: Convert to fraction form
    647,046.40/970,108.80 = 247,532.80/x
  3. Step 3: Cross multiply
    647,046.40x = 970,108.80 × 247,532.80
  4. Step 4: Simplify right side
    647,046.40x = 240,133,747,568.64
  5. Step 5: Solve for x
    x = 240,133,747,568.64/647,046.40
  6. Step 6: Final answer
    x = 371,122.92

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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.