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Finding the Fourth Proportional to 300,725.70, 451,130 and 101,061.55

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Solution

The fourth proportional to 300,725.70, 451,130 and 101,061.55 is: 151,606.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,725.70 : 451,130 = 101,061.55 : x
  2. Step 2: Convert to fraction form
    300,725.70/451,130 = 101,061.55/x
  3. Step 3: Cross multiply
    300,725.70x = 451,130 × 101,061.55
  4. Step 4: Simplify right side
    300,725.70x = 45,591,897,051.50
  5. Step 5: Solve for x
    x = 45,591,897,051.50/300,725.70
  6. Step 6: Final answer
    x = 151,606.25

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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.