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Finding the Fourth Proportional to 225,064.88, 310,667.76 and 129,609.60

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Solution

The fourth proportional to 225,064.88, 310,667.76 and 129,609.60 is: 178,906.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,064.88 : 310,667.76 = 129,609.60 : x
  2. Step 2: Convert to fraction form
    225,064.88/310,667.76 = 129,609.60/x
  3. Step 3: Cross multiply
    225,064.88x = 310,667.76 × 129,609.60
  4. Step 4: Simplify right side
    225,064.88x = 40,265,524,106.50
  5. Step 5: Solve for x
    x = 40,265,524,106.50/225,064.88
  6. Step 6: Final answer
    x = 178,906.30

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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.