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Finding the Fourth Proportional to 219,549.96, 329,435.64 and 86,525.55

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Solution

The fourth proportional to 219,549.96, 329,435.64 and 86,525.55 is: 129,831.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,549.96 : 329,435.64 = 86,525.55 : x
  2. Step 2: Convert to fraction form
    219,549.96/329,435.64 = 86,525.55/x
  3. Step 3: Cross multiply
    219,549.96x = 329,435.64 × 86,525.55
  4. Step 4: Simplify right side
    219,549.96x = 28,504,599,940.60
  5. Step 5: Solve for x
    x = 28,504,599,940.60/219,549.96
  6. Step 6: Final answer
    x = 129,831.95

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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.