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Finding the Fourth Proportional to 220,435.59, 304,269.30 and 129,784.44

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Solution

The fourth proportional to 220,435.59, 304,269.30 and 129,784.44 is: 179,142.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,435.59 : 304,269.30 = 129,784.44 : x
  2. Step 2: Convert to fraction form
    220,435.59/304,269.30 = 129,784.44/x
  3. Step 3: Cross multiply
    220,435.59x = 304,269.30 × 129,784.44
  4. Step 4: Simplify right side
    220,435.59x = 39,489,420,709.69
  5. Step 5: Solve for x
    x = 39,489,420,709.69/220,435.59
  6. Step 6: Final answer
    x = 179,142.67

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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.