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Finding the Fourth Proportional to 372,309.96, 558,021.06 and 259,378.68

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Solution

The fourth proportional to 372,309.96, 558,021.06 and 259,378.68 is: 388,758.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,309.96 : 558,021.06 = 259,378.68 : x
  2. Step 2: Convert to fraction form
    372,309.96/558,021.06 = 259,378.68/x
  3. Step 3: Cross multiply
    372,309.96x = 558,021.06 × 259,378.68
  4. Step 4: Simplify right side
    372,309.96x = 144,738,765,955.00
  5. Step 5: Solve for x
    x = 144,738,765,955.00/372,309.96
  6. Step 6: Final answer
    x = 388,758.78

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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.