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Finding the Fourth Proportional to 812,244.80, 1,218,482.40 and 251,220.80

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Solution

The fourth proportional to 812,244.80, 1,218,482.40 and 251,220.80 is: 376,866.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,244.80 : 1,218,482.40 = 251,220.80 : x
  2. Step 2: Convert to fraction form
    812,244.80/1,218,482.40 = 251,220.80/x
  3. Step 3: Cross multiply
    812,244.80x = 1,218,482.40 × 251,220.80
  4. Step 4: Simplify right side
    812,244.80x = 306,108,123,313.92
  5. Step 5: Solve for x
    x = 306,108,123,313.92/812,244.80
  6. Step 6: Final answer
    x = 376,866.83

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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.