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Finding the Fourth Proportional to 202,979.90, 304,507.25 and 68,030.79

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Solution

The fourth proportional to 202,979.90, 304,507.25 and 68,030.79 is: 102,058.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,979.90 : 304,507.25 = 68,030.79 : x
  2. Step 2: Convert to fraction form
    202,979.90/304,507.25 = 68,030.79/x
  3. Step 3: Cross multiply
    202,979.90x = 304,507.25 × 68,030.79
  4. Step 4: Simplify right side
    202,979.90x = 20,715,868,438.07
  5. Step 5: Solve for x
    x = 20,715,868,438.07/202,979.90
  6. Step 6: Final answer
    x = 102,058.72

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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.