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Finding the Fourth Proportional to 399,562.41, 599,348.81 and 133,322.93

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Solution

The fourth proportional to 399,562.41, 599,348.81 and 133,322.93 is: 199,986.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,562.41 : 599,348.81 = 133,322.93 : x
  2. Step 2: Convert to fraction form
    399,562.41/599,348.81 = 133,322.93/x
  3. Step 3: Cross multiply
    399,562.41x = 599,348.81 × 133,322.93
  4. Step 4: Simplify right side
    399,562.41x = 79,906,939,441.21
  5. Step 5: Solve for x
    x = 79,906,939,441.21/399,562.41
  6. Step 6: Final answer
    x = 199,986.13

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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.