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Finding the Fourth Proportional to 243,608.97, 365,443.16 and 103,320.21

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Solution

The fourth proportional to 243,608.97, 365,443.16 and 103,320.21 is: 154,992.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,608.97 : 365,443.16 = 103,320.21 : x
  2. Step 2: Convert to fraction form
    243,608.97/365,443.16 = 103,320.21/x
  3. Step 3: Cross multiply
    243,608.97x = 365,443.16 × 103,320.21
  4. Step 4: Simplify right side
    243,608.97x = 37,757,663,517.66
  5. Step 5: Solve for x
    x = 37,757,663,517.66/243,608.97
  6. Step 6: Final answer
    x = 154,992.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.