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Finding the Fourth Proportional to 484,651.29, 668,840.72 and 280,711.11

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Solution

The fourth proportional to 484,651.29, 668,840.72 and 280,711.11 is: 387,394.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,651.29 : 668,840.72 = 280,711.11 : x
  2. Step 2: Convert to fraction form
    484,651.29/668,840.72 = 280,711.11/x
  3. Step 3: Cross multiply
    484,651.29x = 668,840.72 × 280,711.11
  4. Step 4: Simplify right side
    484,651.29x = 187,751,019,520.84
  5. Step 5: Solve for x
    x = 187,751,019,520.84/484,651.29
  6. Step 6: Final answer
    x = 387,394.04

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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.