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Finding the Fourth Proportional to 217,290.74, 325,965.87 and 67,503.11

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Solution

The fourth proportional to 217,290.74, 325,965.87 and 67,503.11 is: 101,263.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,290.74 : 325,965.87 = 67,503.11 : x
  2. Step 2: Convert to fraction form
    217,290.74/325,965.87 = 67,503.11/x
  3. Step 3: Cross multiply
    217,290.74x = 325,965.87 × 67,503.11
  4. Step 4: Simplify right side
    217,290.74x = 22,003,708,349.03
  5. Step 5: Solve for x
    x = 22,003,708,349.03/217,290.74
  6. Step 6: Final answer
    x = 101,263.91

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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.