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Finding the Third Proportional to 156,905 and 240,069

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Solution

The third proportional to 156,905 and 240,069 is: 367,312.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,905 : 240,069 = 240,069 : x
  2. Step 2: Convert to fraction form
    156,905/240,069 = 240,069/x
  3. Step 3: Cross multiply
    156,905x = 240,069 × 240,069
  4. Step 4: Simplify right side
    156,905x = 57,633,124,761
  5. Step 5: Solve for x
    x = 57,633,124,761/156,905
  6. Step 6: Final answer
    x = 367,312.23

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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.