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Finding the Fourth Proportional to 201,587.30, 302,308.90 and 66,626.40

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Solution

The fourth proportional to 201,587.30, 302,308.90 and 66,626.40 is: 99,915.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,587.30 : 302,308.90 = 66,626.40 : x
  2. Step 2: Convert to fraction form
    201,587.30/302,308.90 = 66,626.40/x
  3. Step 3: Cross multiply
    201,587.30x = 302,308.90 × 66,626.40
  4. Step 4: Simplify right side
    201,587.30x = 20,141,753,694.96
  5. Step 5: Solve for x
    x = 20,141,753,694.96/201,587.30
  6. Step 6: Final answer
    x = 99,915.79

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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.