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Finding the Fourth Proportional to 484,648.11, 668,782.17 and 269,782.65

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Solution

The fourth proportional to 484,648.11, 668,782.17 and 269,782.65 is: 372,282.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,648.11 : 668,782.17 = 269,782.65 : x
  2. Step 2: Convert to fraction form
    484,648.11/668,782.17 = 269,782.65/x
  3. Step 3: Cross multiply
    484,648.11x = 668,782.17 × 269,782.65
  4. Step 4: Simplify right side
    484,648.11x = 180,425,826,095.35
  5. Step 5: Solve for x
    x = 180,425,826,095.35/484,648.11
  6. Step 6: Final answer
    x = 372,282.12

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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.