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Finding the Fourth Proportional to 219,682.12, 303,110.40 and 129,033.40

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Solution

The fourth proportional to 219,682.12, 303,110.40 and 129,033.40 is: 178,036.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,682.12 : 303,110.40 = 129,033.40 : x
  2. Step 2: Convert to fraction form
    219,682.12/303,110.40 = 129,033.40/x
  3. Step 3: Cross multiply
    219,682.12x = 303,110.40 × 129,033.40
  4. Step 4: Simplify right side
    219,682.12x = 39,111,365,487.36
  5. Step 5: Solve for x
    x = 39,111,365,487.36/219,682.12
  6. Step 6: Final answer
    x = 178,036.18

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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.