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Finding the Fourth Proportional to 303,390.66, 418,522.76 and 188,625.78

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Solution

The fourth proportional to 303,390.66, 418,522.76 and 188,625.78 is: 260,206.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,390.66 : 418,522.76 = 188,625.78 : x
  2. Step 2: Convert to fraction form
    303,390.66/418,522.76 = 188,625.78/x
  3. Step 3: Cross multiply
    303,390.66x = 418,522.76 × 188,625.78
  4. Step 4: Simplify right side
    303,390.66x = 78,944,182,052.75
  5. Step 5: Solve for x
    x = 78,944,182,052.75/303,390.66
  6. Step 6: Final answer
    x = 260,206.37

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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.