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Finding the Third Proportional to 155,368 and 239,920

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Solution

The third proportional to 155,368 and 239,920 is: 370,485.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,368 : 239,920 = 239,920 : x
  2. Step 2: Convert to fraction form
    155,368/239,920 = 239,920/x
  3. Step 3: Cross multiply
    155,368x = 239,920 × 239,920
  4. Step 4: Simplify right side
    155,368x = 57,561,606,400
  5. Step 5: Solve for x
    x = 57,561,606,400/155,368
  6. Step 6: Final answer
    x = 370,485.60

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.