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Finding the Fourth Proportional to 217,305.72, 299,866.80 and 120,514.68

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Solution

The fourth proportional to 217,305.72, 299,866.80 and 120,514.68 is: 166,301.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,305.72 : 299,866.80 = 120,514.68 : x
  2. Step 2: Convert to fraction form
    217,305.72/299,866.80 = 120,514.68/x
  3. Step 3: Cross multiply
    217,305.72x = 299,866.80 × 120,514.68
  4. Step 4: Simplify right side
    217,305.72x = 36,138,351,444.62
  5. Step 5: Solve for x
    x = 36,138,351,444.62/217,305.72
  6. Step 6: Final answer
    x = 166,301.89

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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.