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Finding the Fourth Proportional to 259,995.50, 389,943.93 and 126,741.74

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Solution

The fourth proportional to 259,995.50, 389,943.93 and 126,741.74 is: 190,088.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,995.50 : 389,943.93 = 126,741.74 : x
  2. Step 2: Convert to fraction form
    259,995.50/389,943.93 = 126,741.74/x
  3. Step 3: Cross multiply
    259,995.50x = 389,943.93 × 126,741.74
  4. Step 4: Simplify right side
    259,995.50x = 49,422,172,190.64
  5. Step 5: Solve for x
    x = 49,422,172,190.64/259,995.50
  6. Step 6: Final answer
    x = 190,088.57

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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.