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Finding the Third Proportional to 317,722.50 and 495,339

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Solution

The third proportional to 317,722.50 and 495,339 is: 772,248.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,722.50 : 495,339 = 495,339 : x
  2. Step 2: Convert to fraction form
    317,722.50/495,339 = 495,339/x
  3. Step 3: Cross multiply
    317,722.50x = 495,339 × 495,339
  4. Step 4: Simplify right side
    317,722.50x = 245,360,724,921
  5. Step 5: Solve for x
    x = 245,360,724,921/317,722.50
  6. Step 6: Final answer
    x = 772,248.50

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.