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Finding the Fourth Proportional to 340,919.62, 511,399.59 and 104,278.66

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Solution

The fourth proportional to 340,919.62, 511,399.59 and 104,278.66 is: 156,424.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,919.62 : 511,399.59 = 104,278.66 : x
  2. Step 2: Convert to fraction form
    340,919.62/511,399.59 = 104,278.66/x
  3. Step 3: Cross multiply
    340,919.62x = 511,399.59 × 104,278.66
  4. Step 4: Simplify right side
    340,919.62x = 53,328,063,969.75
  5. Step 5: Solve for x
    x = 53,328,063,969.75/340,919.62
  6. Step 6: Final answer
    x = 156,424.16

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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.