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Finding the Fourth Proportional to 219,879.90, 303,428.67 and 123,084.90

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Solution

The fourth proportional to 219,879.90, 303,428.67 and 123,084.90 is: 169,854.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,879.90 : 303,428.67 = 123,084.90 : x
  2. Step 2: Convert to fraction form
    219,879.90/303,428.67 = 123,084.90/x
  3. Step 3: Cross multiply
    219,879.90x = 303,428.67 × 123,084.90
  4. Step 4: Simplify right side
    219,879.90x = 37,347,487,504.08
  5. Step 5: Solve for x
    x = 37,347,487,504.08/219,879.90
  6. Step 6: Final answer
    x = 169,854.03

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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.