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Finding the Fourth Proportional to 218,886.52, 302,110.36 and 138,262.76

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Solution

The fourth proportional to 218,886.52, 302,110.36 and 138,262.76 is: 190,832.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,886.52 : 302,110.36 = 138,262.76 : x
  2. Step 2: Convert to fraction form
    218,886.52/302,110.36 = 138,262.76/x
  3. Step 3: Cross multiply
    218,886.52x = 302,110.36 × 138,262.76
  4. Step 4: Simplify right side
    218,886.52x = 41,770,612,198.19
  5. Step 5: Solve for x
    x = 41,770,612,198.19/218,886.52
  6. Step 6: Final answer
    x = 190,832.27

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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.