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Finding the Fourth Proportional to 409,311.72, 564,694.89 and 248,107.95

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Solution

The fourth proportional to 409,311.72, 564,694.89 and 248,107.95 is: 342,294.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,311.72 : 564,694.89 = 248,107.95 : x
  2. Step 2: Convert to fraction form
    409,311.72/564,694.89 = 248,107.95/x
  3. Step 3: Cross multiply
    409,311.72x = 564,694.89 × 248,107.95
  4. Step 4: Simplify right side
    409,311.72x = 140,105,291,533.38
  5. Step 5: Solve for x
    x = 140,105,291,533.38/409,311.72
  6. Step 6: Final answer
    x = 342,294.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.