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Finding the Fourth Proportional to 296,927.70, 445,253.04 and 86,523.72

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Solution

The fourth proportional to 296,927.70, 445,253.04 and 86,523.72 is: 129,745.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,927.70 : 445,253.04 = 86,523.72 : x
  2. Step 2: Convert to fraction form
    296,927.70/445,253.04 = 86,523.72/x
  3. Step 3: Cross multiply
    296,927.70x = 445,253.04 × 86,523.72
  4. Step 4: Simplify right side
    296,927.70x = 38,524,949,362.11
  5. Step 5: Solve for x
    x = 38,524,949,362.11/296,927.70
  6. Step 6: Final answer
    x = 129,745.22

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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.