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Finding the Fourth Proportional to 464,963.46, 641,640.11 and 258,220.88

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Solution

The fourth proportional to 464,963.46, 641,640.11 and 258,220.88 is: 356,339.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,963.46 : 641,640.11 = 258,220.88 : x
  2. Step 2: Convert to fraction form
    464,963.46/641,640.11 = 258,220.88/x
  3. Step 3: Cross multiply
    464,963.46x = 641,640.11 × 258,220.88
  4. Step 4: Simplify right side
    464,963.46x = 165,684,873,847.50
  5. Step 5: Solve for x
    x = 165,684,873,847.50/464,963.46
  6. Step 6: Final answer
    x = 356,339.56

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1.5x scale

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.