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Finding the Fourth Proportional to 303,111.42, 418,276.56 and 188,387.11

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Solution

The fourth proportional to 303,111.42, 418,276.56 and 188,387.11 is: 259,963.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,111.42 : 418,276.56 = 188,387.11 : x
  2. Step 2: Convert to fraction form
    303,111.42/418,276.56 = 188,387.11/x
  3. Step 3: Cross multiply
    303,111.42x = 418,276.56 × 188,387.11
  4. Step 4: Simplify right side
    303,111.42x = 78,797,912,319.14
  5. Step 5: Solve for x
    x = 78,797,912,319.14/303,111.42
  6. Step 6: Final answer
    x = 259,963.52

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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.