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Finding the Fourth Proportional to 300,990.87, 415,365.57 and 165,030.57

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Solution

The fourth proportional to 300,990.87, 415,365.57 and 165,030.57 is: 227,741.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,990.87 : 415,365.57 = 165,030.57 : x
  2. Step 2: Convert to fraction form
    300,990.87/415,365.57 = 165,030.57/x
  3. Step 3: Cross multiply
    300,990.87x = 415,365.57 × 165,030.57
  4. Step 4: Simplify right side
    300,990.87x = 68,548,016,775.47
  5. Step 5: Solve for x
    x = 68,548,016,775.47/300,990.87
  6. Step 6: Final answer
    x = 227,741.18

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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.