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Finding the Fourth Proportional to 215,726.94, 323,590.17 and 100,309.98

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Solution

The fourth proportional to 215,726.94, 323,590.17 and 100,309.98 is: 150,464.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,726.94 : 323,590.17 = 100,309.98 : x
  2. Step 2: Convert to fraction form
    215,726.94/323,590.17 = 100,309.98/x
  3. Step 3: Cross multiply
    215,726.94x = 323,590.17 × 100,309.98
  4. Step 4: Simplify right side
    215,726.94x = 32,459,323,480.90
  5. Step 5: Solve for x
    x = 32,459,323,480.90/215,726.94
  6. Step 6: Final answer
    x = 150,464.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.