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Finding the Fourth Proportional to 647,499.20, 970,957.20 and 248,007.20

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Solution

The fourth proportional to 647,499.20, 970,957.20 and 248,007.20 is: 371,899.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,499.20 : 970,957.20 = 248,007.20 : x
  2. Step 2: Convert to fraction form
    647,499.20/970,957.20 = 248,007.20/x
  3. Step 3: Cross multiply
    647,499.20x = 970,957.20 × 248,007.20
  4. Step 4: Simplify right side
    647,499.20x = 240,804,376,491.84
  5. Step 5: Solve for x
    x = 240,804,376,491.84/647,499.20
  6. Step 6: Final answer
    x = 371,899.11

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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.