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Finding the Fourth Proportional to 315,422.78, 435,277.83 and 179,453.80

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Solution

The fourth proportional to 315,422.78, 435,277.83 and 179,453.80 is: 247,643.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,422.78 : 435,277.83 = 179,453.80 : x
  2. Step 2: Convert to fraction form
    315,422.78/435,277.83 = 179,453.80/x
  3. Step 3: Cross multiply
    315,422.78x = 435,277.83 × 179,453.80
  4. Step 4: Simplify right side
    315,422.78x = 78,112,259,417.87
  5. Step 5: Solve for x
    x = 78,112,259,417.87/315,422.78
  6. Step 6: Final answer
    x = 247,643.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.