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Finding the Third Proportional to 228,976 and 336,840

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Solution

The third proportional to 228,976 and 336,840 is: 495,515.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,976 : 336,840 = 336,840 : x
  2. Step 2: Convert to fraction form
    228,976/336,840 = 336,840/x
  3. Step 3: Cross multiply
    228,976x = 336,840 × 336,840
  4. Step 4: Simplify right side
    228,976x = 113,461,185,600
  5. Step 5: Solve for x
    x = 113,461,185,600/228,976
  6. Step 6: Final answer
    x = 495,515.62

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.