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Finding the Fourth Proportional to 303,942.80, 456,691.80 and 269,728.40

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Solution

The fourth proportional to 303,942.80, 456,691.80 and 269,728.40 is: 405,282.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,942.80 : 456,691.80 = 269,728.40 : x
  2. Step 2: Convert to fraction form
    303,942.80/456,691.80 = 269,728.40/x
  3. Step 3: Cross multiply
    303,942.80x = 456,691.80 × 269,728.40
  4. Step 4: Simplify right side
    303,942.80x = 123,182,748,507.12
  5. Step 5: Solve for x
    x = 123,182,748,507.12/303,942.80
  6. Step 6: Final answer
    x = 405,282.67

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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.