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Finding the Fourth Proportional to 217,428.76, 326,220.83 and 132,213

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Solution

The fourth proportional to 217,428.76, 326,220.83 and 132,213 is: 198,366.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,428.76 : 326,220.83 = 132,213 : x
  2. Step 2: Convert to fraction form
    217,428.76/326,220.83 = 132,213/x
  3. Step 3: Cross multiply
    217,428.76x = 326,220.83 × 132,213
  4. Step 4: Simplify right side
    217,428.76x = 43,130,634,596.79
  5. Step 5: Solve for x
    x = 43,130,634,596.79/217,428.76
  6. Step 6: Final answer
    x = 198,366.74

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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.