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Finding the Fourth Proportional to 225,810.42, 311,618.81 and 123,836.60

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Solution

The fourth proportional to 225,810.42, 311,618.81 and 123,836.60 is: 170,894.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,810.42 : 311,618.81 = 123,836.60 : x
  2. Step 2: Convert to fraction form
    225,810.42/311,618.81 = 123,836.60/x
  3. Step 3: Cross multiply
    225,810.42x = 311,618.81 × 123,836.60
  4. Step 4: Simplify right side
    225,810.42x = 38,589,812,832.74
  5. Step 5: Solve for x
    x = 38,589,812,832.74/225,810.42
  6. Step 6: Final answer
    x = 170,894.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.