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Finding the Fourth Proportional to 217,281, 326,066.12 and 89,302.25

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Solution

The fourth proportional to 217,281, 326,066.12 and 89,302.25 is: 134,012.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,281 : 326,066.12 = 89,302.25 : x
  2. Step 2: Convert to fraction form
    217,281/326,066.12 = 89,302.25/x
  3. Step 3: Cross multiply
    217,281x = 326,066.12 × 89,302.25
  4. Step 4: Simplify right side
    217,281x = 29,118,436,087.93
  5. Step 5: Solve for x
    x = 29,118,436,087.93/217,281
  6. Step 6: Final answer
    x = 134,012.80

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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.