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Finding the Fourth Proportional to 100,309.92, 150,447.60 and 30,170.40

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Solution

The fourth proportional to 100,309.92, 150,447.60 and 30,170.40 is: 45,250.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,309.92 : 150,447.60 = 30,170.40 : x
  2. Step 2: Convert to fraction form
    100,309.92/150,447.60 = 30,170.40/x
  3. Step 3: Cross multiply
    100,309.92x = 150,447.60 × 30,170.40
  4. Step 4: Simplify right side
    100,309.92x = 4,539,064,271.04
  5. Step 5: Solve for x
    x = 4,539,064,271.04/100,309.92
  6. Step 6: Final answer
    x = 45,250.40

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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.