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Finding the Third Proportional to 56,780 and 119,440

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Solution

The third proportional to 56,780 and 119,440 is: 251,248.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,780 : 119,440 = 119,440 : x
  2. Step 2: Convert to fraction form
    56,780/119,440 = 119,440/x
  3. Step 3: Cross multiply
    56,780x = 119,440 × 119,440
  4. Step 4: Simplify right side
    56,780x = 14,265,913,600
  5. Step 5: Solve for x
    x = 14,265,913,600/56,780
  6. Step 6: Final answer
    x = 251,248.92

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.