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Finding the Fourth Proportional to 661,647.24, 992,482.20 and 188,344.80

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Solution

The fourth proportional to 661,647.24, 992,482.20 and 188,344.80 is: 282,520.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,647.24 : 992,482.20 = 188,344.80 : x
  2. Step 2: Convert to fraction form
    661,647.24/992,482.20 = 188,344.80/x
  3. Step 3: Cross multiply
    661,647.24x = 992,482.20 × 188,344.80
  4. Step 4: Simplify right side
    661,647.24x = 186,928,861,462.56
  5. Step 5: Solve for x
    x = 186,928,861,462.56/661,647.24
  6. Step 6: Final answer
    x = 282,520.43

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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.