Home / 306,983.79-420,569.33-295,478.33

Finding the Fourth Proportional to 306,983.79, 420,569.33 and 295,478.33

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Solution

The fourth proportional to 306,983.79, 420,569.33 and 295,478.33 is: 404,806.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,983.79 : 420,569.33 = 295,478.33 : x
  2. Step 2: Convert to fraction form
    306,983.79/420,569.33 = 295,478.33/x
  3. Step 3: Cross multiply
    306,983.79x = 420,569.33 × 295,478.33
  4. Step 4: Simplify right side
    306,983.79x = 124,269,119,697.38
  5. Step 5: Solve for x
    x = 124,269,119,697.38/306,983.79
  6. Step 6: Final answer
    x = 404,806.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.