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Finding the Fourth Proportional to 215,393.13, 323,237.34 and 75,151.80

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Solution

The fourth proportional to 215,393.13, 323,237.34 and 75,151.80 is: 112,779.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,393.13 : 323,237.34 = 75,151.80 : x
  2. Step 2: Convert to fraction form
    215,393.13/323,237.34 = 75,151.80/x
  3. Step 3: Cross multiply
    215,393.13x = 323,237.34 × 75,151.80
  4. Step 4: Simplify right side
    215,393.13x = 24,291,867,928.21
  5. Step 5: Solve for x
    x = 24,291,867,928.21/215,393.13
  6. Step 6: Final answer
    x = 112,779.21

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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.