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Finding the Fourth Proportional to 399,804.90, 599,811.12 and 119,322.15

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Solution

The fourth proportional to 399,804.90, 599,811.12 and 119,322.15 is: 179,014.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,804.90 : 599,811.12 = 119,322.15 : x
  2. Step 2: Convert to fraction form
    399,804.90/599,811.12 = 119,322.15/x
  3. Step 3: Cross multiply
    399,804.90x = 599,811.12 × 119,322.15
  4. Step 4: Simplify right side
    399,804.90x = 71,570,752,432.31
  5. Step 5: Solve for x
    x = 71,570,752,432.31/399,804.90
  6. Step 6: Final answer
    x = 179,014.20

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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.