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Finding the Fourth Proportional to 278,489.98, 417,360.79 and 151,940.60

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Solution

The fourth proportional to 278,489.98, 417,360.79 and 151,940.60 is: 227,706.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,489.98 : 417,360.79 = 151,940.60 : x
  2. Step 2: Convert to fraction form
    278,489.98/417,360.79 = 151,940.60/x
  3. Step 3: Cross multiply
    278,489.98x = 417,360.79 × 151,940.60
  4. Step 4: Simplify right side
    278,489.98x = 63,414,047,142.12
  5. Step 5: Solve for x
    x = 63,414,047,142.12/278,489.98
  6. Step 6: Final answer
    x = 227,706.74

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1.5x scale

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.