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Finding the Third Proportional to 155,378.25 and 239,935.50

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Solution

The third proportional to 155,378.25 and 239,935.50 is: 370,509.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,378.25 : 239,935.50 = 239,935.50 : x
  2. Step 2: Convert to fraction form
    155,378.25/239,935.50 = 239,935.50/x
  3. Step 3: Cross multiply
    155,378.25x = 239,935.50 × 239,935.50
  4. Step 4: Simplify right side
    155,378.25x = 57,569,044,160.25
  5. Step 5: Solve for x
    x = 57,569,044,160.25/155,378.25
  6. Step 6: Final answer
    x = 370,509.03

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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.