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Finding the Fourth Proportional to 444,609.78, 613,561.50 and 243,405.78

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Solution

The fourth proportional to 444,609.78, 613,561.50 and 243,405.78 is: 335,899.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,609.78 : 613,561.50 = 243,405.78 : x
  2. Step 2: Convert to fraction form
    444,609.78/613,561.50 = 243,405.78/x
  3. Step 3: Cross multiply
    444,609.78x = 613,561.50 × 243,405.78
  4. Step 4: Simplify right side
    444,609.78x = 149,344,415,485.47
  5. Step 5: Solve for x
    x = 149,344,415,485.47/444,609.78
  6. Step 6: Final answer
    x = 335,899.98

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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.