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Finding the Third Proportional to 174,280 and 260,720

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Solution

The third proportional to 174,280 and 260,720 is: 390,032.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,280 : 260,720 = 260,720 : x
  2. Step 2: Convert to fraction form
    174,280/260,720 = 260,720/x
  3. Step 3: Cross multiply
    174,280x = 260,720 × 260,720
  4. Step 4: Simplify right side
    174,280x = 67,974,918,400
  5. Step 5: Solve for x
    x = 67,974,918,400/174,280
  6. Step 6: Final answer
    x = 390,032.81

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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.