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Finding the Fourth Proportional to 442,648.22, 610,836.86 and 261,418.55

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Solution

The fourth proportional to 442,648.22, 610,836.86 and 261,418.55 is: 360,747.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,648.22 : 610,836.86 = 261,418.55 : x
  2. Step 2: Convert to fraction form
    442,648.22/610,836.86 = 261,418.55/x
  3. Step 3: Cross multiply
    442,648.22x = 610,836.86 × 261,418.55
  4. Step 4: Simplify right side
    442,648.22x = 159,684,081,866.48
  5. Step 5: Solve for x
    x = 159,684,081,866.48/442,648.22
  6. Step 6: Final answer
    x = 360,747.15

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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.