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Finding the Fourth Proportional to 485,848.73, 728,879.73 and 148,914.72

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Solution

The fourth proportional to 485,848.73, 728,879.73 and 148,914.72 is: 223,404.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,848.73 : 728,879.73 = 148,914.72 : x
  2. Step 2: Convert to fraction form
    485,848.73/728,879.73 = 148,914.72/x
  3. Step 3: Cross multiply
    485,848.73x = 728,879.73 × 148,914.72
  4. Step 4: Simplify right side
    485,848.73x = 108,540,920,162.05
  5. Step 5: Solve for x
    x = 108,540,920,162.05/485,848.73
  6. Step 6: Final answer
    x = 223,404.76

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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.