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Finding the Fourth Proportional to 296,645.78, 444,964.80 and 72,008

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Solution

The fourth proportional to 296,645.78, 444,964.80 and 72,008 is: 108,011.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,645.78 : 444,964.80 = 72,008 : x
  2. Step 2: Convert to fraction form
    296,645.78/444,964.80 = 72,008/x
  3. Step 3: Cross multiply
    296,645.78x = 444,964.80 × 72,008
  4. Step 4: Simplify right side
    296,645.78x = 32,041,025,318.40
  5. Step 5: Solve for x
    x = 32,041,025,318.40/296,645.78
  6. Step 6: Final answer
    x = 108,011.06

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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.