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Finding the Fourth Proportional to 303,418.30, 423,998.30 and 303,418.30

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Solution

The fourth proportional to 303,418.30, 423,998.30 and 303,418.30 is: 423,998.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,418.30 : 423,998.30 = 303,418.30 : x
  2. Step 2: Convert to fraction form
    303,418.30/423,998.30 = 303,418.30/x
  3. Step 3: Cross multiply
    303,418.30x = 423,998.30 × 303,418.30
  4. Step 4: Simplify right side
    303,418.30x = 128,648,843,388.89
  5. Step 5: Solve for x
    x = 128,648,843,388.89/303,418.30
  6. Step 6: Final answer
    x = 423,998.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.