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Finding the Third Proportional to 243,418 and 531,124

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Solution

The third proportional to 243,418 and 531,124 is: 1,158,881.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,418 : 531,124 = 531,124 : x
  2. Step 2: Convert to fraction form
    243,418/531,124 = 531,124/x
  3. Step 3: Cross multiply
    243,418x = 531,124 × 531,124
  4. Step 4: Simplify right side
    243,418x = 282,092,703,376
  5. Step 5: Solve for x
    x = 282,092,703,376/243,418
  6. Step 6: Final answer
    x = 1,158,881.85

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.