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Finding the Fourth Proportional to 217,719.60, 300,485.84 and 132,885.96

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Solution

The fourth proportional to 217,719.60, 300,485.84 and 132,885.96 is: 183,402.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,719.60 : 300,485.84 = 132,885.96 : x
  2. Step 2: Convert to fraction form
    217,719.60/300,485.84 = 132,885.96/x
  3. Step 3: Cross multiply
    217,719.60x = 300,485.84 × 132,885.96
  4. Step 4: Simplify right side
    217,719.60x = 39,930,349,314.81
  5. Step 5: Solve for x
    x = 39,930,349,314.81/217,719.60
  6. Step 6: Final answer
    x = 183,402.64

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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.