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Finding the Fourth Proportional to 485,995.56, 729,015.30 and 149,011.62

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Solution

The fourth proportional to 485,995.56, 729,015.30 and 149,011.62 is: 223,524.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,995.56 : 729,015.30 = 149,011.62 : x
  2. Step 2: Convert to fraction form
    485,995.56/729,015.30 = 149,011.62/x
  3. Step 3: Cross multiply
    485,995.56x = 729,015.30 × 149,011.62
  4. Step 4: Simplify right side
    485,995.56x = 108,631,750,857.79
  5. Step 5: Solve for x
    x = 108,631,750,857.79/485,995.56
  6. Step 6: Final answer
    x = 223,524.16

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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.