Home / 217,503.67-326,242.52-129,318.36

Finding the Fourth Proportional to 217,503.67, 326,242.52 and 129,318.36

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Solution

The fourth proportional to 217,503.67, 326,242.52 and 129,318.36 is: 193,969.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,503.67 : 326,242.52 = 129,318.36 : x
  2. Step 2: Convert to fraction form
    217,503.67/326,242.52 = 129,318.36/x
  3. Step 3: Cross multiply
    217,503.67x = 326,242.52 × 129,318.36
  4. Step 4: Simplify right side
    217,503.67x = 42,189,147,648.67
  5. Step 5: Solve for x
    x = 42,189,147,648.67/217,503.67
  6. Step 6: Final answer
    x = 193,969.82

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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.