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Finding the Fourth Proportional to 479,983.25, 720,091.52 and 147,559.25

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Solution

The fourth proportional to 479,983.25, 720,091.52 and 147,559.25 is: 221,374.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,983.25 : 720,091.52 = 147,559.25 : x
  2. Step 2: Convert to fraction form
    479,983.25/720,091.52 = 147,559.25/x
  3. Step 3: Cross multiply
    479,983.25x = 720,091.52 × 147,559.25
  4. Step 4: Simplify right side
    479,983.25x = 106,256,163,884.76
  5. Step 5: Solve for x
    x = 106,256,163,884.76/479,983.25
  6. Step 6: Final answer
    x = 221,374.73

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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.