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Finding the Fourth Proportional to 300,620.16, 414,421.92 and 243,933.12

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Solution

The fourth proportional to 300,620.16, 414,421.92 and 243,933.12 is: 336,275.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,620.16 : 414,421.92 = 243,933.12 : x
  2. Step 2: Convert to fraction form
    300,620.16/414,421.92 = 243,933.12/x
  3. Step 3: Cross multiply
    300,620.16x = 414,421.92 × 243,933.12
  4. Step 4: Simplify right side
    300,620.16x = 101,091,231,941.99
  5. Step 5: Solve for x
    x = 101,091,231,941.99/300,620.16
  6. Step 6: Final answer
    x = 336,275.62

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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.