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Finding the Fourth Proportional to 343,672.98, 515,515.31 and 119,040.08

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Solution

The fourth proportional to 343,672.98, 515,515.31 and 119,040.08 is: 178,562.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,672.98 : 515,515.31 = 119,040.08 : x
  2. Step 2: Convert to fraction form
    343,672.98/515,515.31 = 119,040.08/x
  3. Step 3: Cross multiply
    343,672.98x = 515,515.31 × 119,040.08
  4. Step 4: Simplify right side
    343,672.98x = 61,366,980,570.85
  5. Step 5: Solve for x
    x = 61,366,980,570.85/343,672.98
  6. Step 6: Final answer
    x = 178,562.13

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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.