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Finding the Fourth Proportional to 399,480.69, 599,222.61 and 99,960.41

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Solution

The fourth proportional to 399,480.69, 599,222.61 and 99,960.41 is: 149,941.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,480.69 : 599,222.61 = 99,960.41 : x
  2. Step 2: Convert to fraction form
    399,480.69/599,222.61 = 99,960.41/x
  3. Step 3: Cross multiply
    399,480.69x = 599,222.61 × 99,960.41
  4. Step 4: Simplify right side
    399,480.69x = 59,898,539,274.93
  5. Step 5: Solve for x
    x = 59,898,539,274.93/399,480.69
  6. Step 6: Final answer
    x = 149,941.01

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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.