Home / 219,815.11-303,350.28-123,018.21

Finding the Fourth Proportional to 219,815.11, 303,350.28 and 123,018.21

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Solution

The fourth proportional to 219,815.11, 303,350.28 and 123,018.21 is: 169,768.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,815.11 : 303,350.28 = 123,018.21 : x
  2. Step 2: Convert to fraction form
    219,815.11/303,350.28 = 123,018.21/x
  3. Step 3: Cross multiply
    219,815.11x = 303,350.28 × 123,018.21
  4. Step 4: Simplify right side
    219,815.11x = 37,317,608,618.81
  5. Step 5: Solve for x
    x = 37,317,608,618.81/219,815.11
  6. Step 6: Final answer
    x = 169,768.17

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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.