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Finding the Fourth Proportional to 485,424.06, 728,019.27 and 148,467.66

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Solution

The fourth proportional to 485,424.06, 728,019.27 and 148,467.66 is: 222,665.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,424.06 : 728,019.27 = 148,467.66 : x
  2. Step 2: Convert to fraction form
    485,424.06/728,019.27 = 148,467.66/x
  3. Step 3: Cross multiply
    485,424.06x = 728,019.27 × 148,467.66
  4. Step 4: Simplify right side
    485,424.06x = 108,087,317,451.81
  5. Step 5: Solve for x
    x = 108,087,317,451.81/485,424.06
  6. Step 6: Final answer
    x = 222,665.76

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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.