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Finding the Fourth Proportional to 611,883.60, 917,469 and 237,469.20

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Solution

The fourth proportional to 611,883.60, 917,469 and 237,469.20 is: 356,065.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,883.60 : 917,469 = 237,469.20 : x
  2. Step 2: Convert to fraction form
    611,883.60/917,469 = 237,469.20/x
  3. Step 3: Cross multiply
    611,883.60x = 917,469 × 237,469.20
  4. Step 4: Simplify right side
    611,883.60x = 217,870,629,454.80
  5. Step 5: Solve for x
    x = 217,870,629,454.80/611,883.60
  6. Step 6: Final answer
    x = 356,065.48

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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.