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Finding the Fourth Proportional to 578,226.20, 866,840.43 and 278,294.13

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Solution

The fourth proportional to 578,226.20, 866,840.43 and 278,294.13 is: 417,201.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,226.20 : 866,840.43 = 278,294.13 : x
  2. Step 2: Convert to fraction form
    578,226.20/866,840.43 = 278,294.13/x
  3. Step 3: Cross multiply
    578,226.20x = 866,840.43 × 278,294.13
  4. Step 4: Simplify right side
    578,226.20x = 241,236,604,359.28
  5. Step 5: Solve for x
    x = 241,236,604,359.28/578,226.20
  6. Step 6: Final answer
    x = 417,201.10

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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.