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Finding the Fourth Proportional to 534,987.15, 738,093.09 and 305,378.82

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Solution

The fourth proportional to 534,987.15, 738,093.09 and 305,378.82 is: 421,314.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,987.15 : 738,093.09 = 305,378.82 : x
  2. Step 2: Convert to fraction form
    534,987.15/738,093.09 = 305,378.82/x
  3. Step 3: Cross multiply
    534,987.15x = 738,093.09 × 305,378.82
  4. Step 4: Simplify right side
    534,987.15x = 225,397,996,874.35
  5. Step 5: Solve for x
    x = 225,397,996,874.35/534,987.15
  6. Step 6: Final answer
    x = 421,314.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.