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Finding the Fourth Proportional to 202,539.31, 303,621.15 and 69,387.93

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Solution

The fourth proportional to 202,539.31, 303,621.15 and 69,387.93 is: 104,017.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,539.31 : 303,621.15 = 69,387.93 : x
  2. Step 2: Convert to fraction form
    202,539.31/303,621.15 = 69,387.93/x
  3. Step 3: Cross multiply
    202,539.31x = 303,621.15 × 69,387.93
  4. Step 4: Simplify right side
    202,539.31x = 21,067,643,102.72
  5. Step 5: Solve for x
    x = 21,067,643,102.72/202,539.31
  6. Step 6: Final answer
    x = 104,017.55

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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.