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Finding the Fourth Proportional to 215,375.81, 297,246.51 and 123,530.92

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Solution

The fourth proportional to 215,375.81, 297,246.51 and 123,530.92 is: 170,488.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,375.81 : 297,246.51 = 123,530.92 : x
  2. Step 2: Convert to fraction form
    215,375.81/297,246.51 = 123,530.92/x
  3. Step 3: Cross multiply
    215,375.81x = 297,246.51 × 123,530.92
  4. Step 4: Simplify right side
    215,375.81x = 36,719,135,775.98
  5. Step 5: Solve for x
    x = 36,719,135,775.98/215,375.81
  6. Step 6: Final answer
    x = 170,488.67

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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.