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Finding the Fourth Proportional to 385,241.72, 577,718.91 and 132,450.65

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Solution

The fourth proportional to 385,241.72, 577,718.91 and 132,450.65 is: 198,626.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,241.72 : 577,718.91 = 132,450.65 : x
  2. Step 2: Convert to fraction form
    385,241.72/577,718.91 = 132,450.65/x
  3. Step 3: Cross multiply
    385,241.72x = 577,718.91 × 132,450.65
  4. Step 4: Simplify right side
    385,241.72x = 76,519,242,258.20
  5. Step 5: Solve for x
    x = 76,519,242,258.20/385,241.72
  6. Step 6: Final answer
    x = 198,626.57

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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.