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Finding the Third Proportional to 257,467.50 and 393,862.50

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Solution

The third proportional to 257,467.50 and 393,862.50 is: 602,513.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,467.50 : 393,862.50 = 393,862.50 : x
  2. Step 2: Convert to fraction form
    257,467.50/393,862.50 = 393,862.50/x
  3. Step 3: Cross multiply
    257,467.50x = 393,862.50 × 393,862.50
  4. Step 4: Simplify right side
    257,467.50x = 155,127,668,906.25
  5. Step 5: Solve for x
    x = 155,127,668,906.25/257,467.50
  6. Step 6: Final answer
    x = 602,513.59

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.