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Finding the Fourth Proportional to 647,231.70, 970,156.35 and 247,718.10

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Solution

The fourth proportional to 647,231.70, 970,156.35 and 247,718.10 is: 371,312.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,231.70 : 970,156.35 = 247,718.10 : x
  2. Step 2: Convert to fraction form
    647,231.70/970,156.35 = 247,718.10/x
  3. Step 3: Cross multiply
    647,231.70x = 970,156.35 × 247,718.10
  4. Step 4: Simplify right side
    647,231.70x = 240,325,287,724.94
  5. Step 5: Solve for x
    x = 240,325,287,724.94/647,231.70
  6. Step 6: Final answer
    x = 371,312.60

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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.