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Finding the Fourth Proportional to 296,648.80, 444,969.28 and 72,011

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Solution

The fourth proportional to 296,648.80, 444,969.28 and 72,011 is: 108,015.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,648.80 : 444,969.28 = 72,011 : x
  2. Step 2: Convert to fraction form
    296,648.80/444,969.28 = 72,011/x
  3. Step 3: Cross multiply
    296,648.80x = 444,969.28 × 72,011
  4. Step 4: Simplify right side
    296,648.80x = 32,042,682,822.08
  5. Step 5: Solve for x
    x = 32,042,682,822.08/296,648.80
  6. Step 6: Final answer
    x = 108,015.55

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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.