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Finding the Fourth Proportional to 290,249.51, 434,858.67 and 247,697.78

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Solution

The fourth proportional to 290,249.51, 434,858.67 and 247,697.78 is: 371,106.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,249.51 : 434,858.67 = 247,697.78 : x
  2. Step 2: Convert to fraction form
    290,249.51/434,858.67 = 247,697.78/x
  3. Step 3: Cross multiply
    290,249.51x = 434,858.67 × 247,697.78
  4. Step 4: Simplify right side
    290,249.51x = 107,713,524,998.46
  5. Step 5: Solve for x
    x = 107,713,524,998.46/290,249.51
  6. Step 6: Final answer
    x = 371,106.66

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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.