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Finding the Fourth Proportional to 340,879.77, 511,319.64 and 104,222.43

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Solution

The fourth proportional to 340,879.77, 511,319.64 and 104,222.43 is: 156,333.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,879.77 : 511,319.64 = 104,222.43 : x
  2. Step 2: Convert to fraction form
    340,879.77/511,319.64 = 104,222.43/x
  3. Step 3: Cross multiply
    340,879.77x = 511,319.64 × 104,222.43
  4. Step 4: Simplify right side
    340,879.77x = 53,290,975,387.53
  5. Step 5: Solve for x
    x = 53,290,975,387.53/340,879.77
  6. Step 6: Final answer
    x = 156,333.64

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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.