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Finding the Fourth Proportional to 215,656.72, 297,609.08 and 123,790.84

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Solution

The fourth proportional to 215,656.72, 297,609.08 and 123,790.84 is: 170,832.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,656.72 : 297,609.08 = 123,790.84 : x
  2. Step 2: Convert to fraction form
    215,656.72/297,609.08 = 123,790.84/x
  3. Step 3: Cross multiply
    215,656.72x = 297,609.08 × 123,790.84
  4. Step 4: Simplify right side
    215,656.72x = 36,841,278,004.83
  5. Step 5: Solve for x
    x = 36,841,278,004.83/215,656.72
  6. Step 6: Final answer
    x = 170,832.97

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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.