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Finding the Fourth Proportional to 303,390.17, 418,522.08 and 188,625.29

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Solution

The fourth proportional to 303,390.17, 418,522.08 and 188,625.29 is: 260,205.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,390.17 : 418,522.08 = 188,625.29 : x
  2. Step 2: Convert to fraction form
    303,390.17/418,522.08 = 188,625.29/x
  3. Step 3: Cross multiply
    303,390.17x = 418,522.08 × 188,625.29
  4. Step 4: Simplify right side
    303,390.17x = 78,943,846,618.79
  5. Step 5: Solve for x
    x = 78,943,846,618.79/303,390.17
  6. Step 6: Final answer
    x = 260,205.69

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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.