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Finding the Third Proportional to 156,938 and 240,117

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Solution

The third proportional to 156,938 and 240,117 is: 367,381.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,938 : 240,117 = 240,117 : x
  2. Step 2: Convert to fraction form
    156,938/240,117 = 240,117/x
  3. Step 3: Cross multiply
    156,938x = 240,117 × 240,117
  4. Step 4: Simplify right side
    156,938x = 57,656,173,689
  5. Step 5: Solve for x
    x = 57,656,173,689/156,938
  6. Step 6: Final answer
    x = 367,381.86

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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.