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Finding the Fourth Proportional to 297,319.08, 445,974.71 and 72,681.48

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Solution

The fourth proportional to 297,319.08, 445,974.71 and 72,681.48 is: 109,021.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,319.08 : 445,974.71 = 72,681.48 : x
  2. Step 2: Convert to fraction form
    297,319.08/445,974.71 = 72,681.48/x
  3. Step 3: Cross multiply
    297,319.08x = 445,974.71 × 72,681.48
  4. Step 4: Simplify right side
    297,319.08x = 32,414,101,601.96
  5. Step 5: Solve for x
    x = 32,414,101,601.96/297,319.08
  6. Step 6: Final answer
    x = 109,021.26

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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.