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Finding the Fourth Proportional to 303,281.62, 418,536.21 and 187,020.70

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Solution

The fourth proportional to 303,281.62, 418,536.21 and 187,020.70 is: 258,093.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,281.62 : 418,536.21 = 187,020.70 : x
  2. Step 2: Convert to fraction form
    303,281.62/418,536.21 = 187,020.70/x
  3. Step 3: Cross multiply
    303,281.62x = 418,536.21 × 187,020.70
  4. Step 4: Simplify right side
    303,281.62x = 78,274,934,624.53
  5. Step 5: Solve for x
    x = 78,274,934,624.53/303,281.62
  6. Step 6: Final answer
    x = 258,093.24

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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.