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Finding the Third Proportional to 129,397.50 and 282,782.25

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Solution

The third proportional to 129,397.50 and 282,782.25 is: 617,985.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,397.50 : 282,782.25 = 282,782.25 : x
  2. Step 2: Convert to fraction form
    129,397.50/282,782.25 = 282,782.25/x
  3. Step 3: Cross multiply
    129,397.50x = 282,782.25 × 282,782.25
  4. Step 4: Simplify right side
    129,397.50x = 79,965,800,915.06
  5. Step 5: Solve for x
    x = 79,965,800,915.06/129,397.50
  6. Step 6: Final answer
    x = 617,985.67

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.