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Finding the Fourth Proportional to 217,937.67, 300,752.84 and 122,443.53

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Solution

The fourth proportional to 217,937.67, 300,752.84 and 122,443.53 is: 168,971.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,937.67 : 300,752.84 = 122,443.53 : x
  2. Step 2: Convert to fraction form
    217,937.67/300,752.84 = 122,443.53/x
  3. Step 3: Cross multiply
    217,937.67x = 300,752.84 × 122,443.53
  4. Step 4: Simplify right side
    217,937.67x = 36,825,238,774.91
  5. Step 5: Solve for x
    x = 36,825,238,774.91/217,937.67
  6. Step 6: Final answer
    x = 168,971.43

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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.