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Finding the Fourth Proportional to 393,488.88, 590,238.58 and 123,608.22

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Solution

The fourth proportional to 393,488.88, 590,238.58 and 123,608.22 is: 185,413.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,488.88 : 590,238.58 = 123,608.22 : x
  2. Step 2: Convert to fraction form
    393,488.88/590,238.58 = 123,608.22/x
  3. Step 3: Cross multiply
    393,488.88x = 590,238.58 × 123,608.22
  4. Step 4: Simplify right side
    393,488.88x = 72,958,340,249.13
  5. Step 5: Solve for x
    x = 72,958,340,249.13/393,488.88
  6. Step 6: Final answer
    x = 185,413.98

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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.