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Finding the Fourth Proportional to 399,464.46, 599,190.62 and 118,981.71

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Solution

The fourth proportional to 399,464.46, 599,190.62 and 118,981.71 is: 178,470.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,464.46 : 599,190.62 = 118,981.71 : x
  2. Step 2: Convert to fraction form
    399,464.46/599,190.62 = 118,981.71/x
  3. Step 3: Cross multiply
    399,464.46x = 599,190.62 × 118,981.71
  4. Step 4: Simplify right side
    399,464.46x = 71,292,723,988.65
  5. Step 5: Solve for x
    x = 71,292,723,988.65/399,464.46
  6. Step 6: Final answer
    x = 178,470.76

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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.