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Finding the Fourth Proportional to 275,155.86, 412,733.82 and 181,639.74

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Solution

The fourth proportional to 275,155.86, 412,733.82 and 181,639.74 is: 272,459.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,155.86 : 412,733.82 = 181,639.74 : x
  2. Step 2: Convert to fraction form
    275,155.86/412,733.82 = 181,639.74/x
  3. Step 3: Cross multiply
    275,155.86x = 412,733.82 × 181,639.74
  4. Step 4: Simplify right side
    275,155.86x = 74,968,863,754.01
  5. Step 5: Solve for x
    x = 74,968,863,754.01/275,155.86
  6. Step 6: Final answer
    x = 272,459.63

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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.