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Finding the Third Proportional to 151,420 and 235,128

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Solution

The third proportional to 151,420 and 235,128 is: 365,111.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,420 : 235,128 = 235,128 : x
  2. Step 2: Convert to fraction form
    151,420/235,128 = 235,128/x
  3. Step 3: Cross multiply
    151,420x = 235,128 × 235,128
  4. Step 4: Simplify right side
    151,420x = 55,285,176,384
  5. Step 5: Solve for x
    x = 55,285,176,384/151,420
  6. Step 6: Final answer
    x = 365,111.45

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.