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Finding the Fourth Proportional to 225,679.36, 338,162.88 and 83,328.64

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Solution

The fourth proportional to 225,679.36, 338,162.88 and 83,328.64 is: 124,861.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,679.36 : 338,162.88 = 83,328.64 : x
  2. Step 2: Convert to fraction form
    225,679.36/338,162.88 = 83,328.64/x
  3. Step 3: Cross multiply
    225,679.36x = 338,162.88 × 83,328.64
  4. Step 4: Simplify right side
    225,679.36x = 28,178,652,888.88
  5. Step 5: Solve for x
    x = 28,178,652,888.88/225,679.36
  6. Step 6: Final answer
    x = 124,861.45

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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.