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Finding the Fourth Proportional to 515,326.72, 773,016.16 and 141,352.96

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Solution

The fourth proportional to 515,326.72, 773,016.16 and 141,352.96 is: 212,036.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,326.72 : 773,016.16 = 141,352.96 : x
  2. Step 2: Convert to fraction form
    515,326.72/773,016.16 = 141,352.96/x
  3. Step 3: Cross multiply
    515,326.72x = 773,016.16 × 141,352.96
  4. Step 4: Simplify right side
    515,326.72x = 109,268,122,343.83
  5. Step 5: Solve for x
    x = 109,268,122,343.83/515,326.72
  6. Step 6: Final answer
    x = 212,036.59

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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.