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Finding the Fourth Proportional to 300,687.20, 451,030.80 and 100,941.20

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Solution

The fourth proportional to 300,687.20, 451,030.80 and 100,941.20 is: 151,411.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,687.20 : 451,030.80 = 100,941.20 : x
  2. Step 2: Convert to fraction form
    300,687.20/451,030.80 = 100,941.20/x
  3. Step 3: Cross multiply
    300,687.20x = 451,030.80 × 100,941.20
  4. Step 4: Simplify right side
    300,687.20x = 45,527,590,188.96
  5. Step 5: Solve for x
    x = 45,527,590,188.96/300,687.20
  6. Step 6: Final answer
    x = 151,411.80

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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.