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Finding the Fourth Proportional to 217,538.31, 326,316.31 and 103,627.56

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Solution

The fourth proportional to 217,538.31, 326,316.31 and 103,627.56 is: 155,445.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,538.31 : 326,316.31 = 103,627.56 : x
  2. Step 2: Convert to fraction form
    217,538.31/326,316.31 = 103,627.56/x
  3. Step 3: Cross multiply
    217,538.31x = 326,316.31 × 103,627.56
  4. Step 4: Simplify right side
    217,538.31x = 33,815,362,734.43
  5. Step 5: Solve for x
    x = 33,815,362,734.43/217,538.31
  6. Step 6: Final answer
    x = 155,445.55

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1.5x scale

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.