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Finding the Third Proportional to 120,312 and 260,712

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Solution

The third proportional to 120,312 and 260,712 is: 564,954.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,312 : 260,712 = 260,712 : x
  2. Step 2: Convert to fraction form
    120,312/260,712 = 260,712/x
  3. Step 3: Cross multiply
    120,312x = 260,712 × 260,712
  4. Step 4: Simplify right side
    120,312x = 67,970,746,944
  5. Step 5: Solve for x
    x = 67,970,746,944/120,312
  6. Step 6: Final answer
    x = 564,954.01

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.