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Finding the Fourth Proportional to 273,649.59, 410,471.55 and 86,661.09

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Solution

The fourth proportional to 273,649.59, 410,471.55 and 86,661.09 is: 129,990.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,649.59 : 410,471.55 = 86,661.09 : x
  2. Step 2: Convert to fraction form
    273,649.59/410,471.55 = 86,661.09/x
  3. Step 3: Cross multiply
    273,649.59x = 410,471.55 × 86,661.09
  4. Step 4: Simplify right side
    273,649.59x = 35,571,911,936.99
  5. Step 5: Solve for x
    x = 35,571,911,936.99/273,649.59
  6. Step 6: Final answer
    x = 129,990.74

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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.