Home / 278,379.02-417,568.37-100,885.75

Finding the Fourth Proportional to 278,379.02, 417,568.37 and 100,885.75

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Solution

The fourth proportional to 278,379.02, 417,568.37 and 100,885.75 is: 151,328.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,379.02 : 417,568.37 = 100,885.75 : x
  2. Step 2: Convert to fraction form
    278,379.02/417,568.37 = 100,885.75/x
  3. Step 3: Cross multiply
    278,379.02x = 417,568.37 × 100,885.75
  4. Step 4: Simplify right side
    278,379.02x = 42,126,696,635.38
  5. Step 5: Solve for x
    x = 42,126,696,635.38/278,379.02
  6. Step 6: Final answer
    x = 151,328.56

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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.