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Finding the Fourth Proportional to 485,089.72, 727,661.58 and 148,181.56

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Solution

The fourth proportional to 485,089.72, 727,661.58 and 148,181.56 is: 222,280.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,089.72 : 727,661.58 = 148,181.56 : x
  2. Step 2: Convert to fraction form
    485,089.72/727,661.58 = 148,181.56/x
  3. Step 3: Cross multiply
    485,089.72x = 727,661.58 × 148,181.56
  4. Step 4: Simplify right side
    485,089.72x = 107,826,028,076.47
  5. Step 5: Solve for x
    x = 107,826,028,076.47/485,089.72
  6. Step 6: Final answer
    x = 222,280.59

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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.