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Finding the Third Proportional to 156,720 and 235,422

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Solution

The third proportional to 156,720 and 235,422 is: 353,646.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,720 : 235,422 = 235,422 : x
  2. Step 2: Convert to fraction form
    156,720/235,422 = 235,422/x
  3. Step 3: Cross multiply
    156,720x = 235,422 × 235,422
  4. Step 4: Simplify right side
    156,720x = 55,423,518,084
  5. Step 5: Solve for x
    x = 55,423,518,084/156,720
  6. Step 6: Final answer
    x = 353,646.75

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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.