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Finding the Fourth Proportional to 213,062.71, 319,736.63 and 88,403.71

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Solution

The fourth proportional to 213,062.71, 319,736.63 and 88,403.71 is: 132,664.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,062.71 : 319,736.63 = 88,403.71 : x
  2. Step 2: Convert to fraction form
    213,062.71/319,736.63 = 88,403.71/x
  3. Step 3: Cross multiply
    213,062.71x = 319,736.63 × 88,403.71
  4. Step 4: Simplify right side
    213,062.71x = 28,265,903,872.88
  5. Step 5: Solve for x
    x = 28,265,903,872.88/213,062.71
  6. Step 6: Final answer
    x = 132,664.72

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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.