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Finding the Fourth Proportional to 303,997.68, 456,055.08 and 126,409.20

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Solution

The fourth proportional to 303,997.68, 456,055.08 and 126,409.20 is: 189,638.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,997.68 : 456,055.08 = 126,409.20 : x
  2. Step 2: Convert to fraction form
    303,997.68/456,055.08 = 126,409.20/x
  3. Step 3: Cross multiply
    303,997.68x = 456,055.08 × 126,409.20
  4. Step 4: Simplify right side
    303,997.68x = 57,649,557,818.74
  5. Step 5: Solve for x
    x = 57,649,557,818.74/303,997.68
  6. Step 6: Final answer
    x = 189,638.15

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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.