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Finding the Fourth Proportional to 303,058.70, 455,572.20 and 214,922.60

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Solution

The fourth proportional to 303,058.70, 455,572.20 and 214,922.60 is: 323,081.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,058.70 : 455,572.20 = 214,922.60 : x
  2. Step 2: Convert to fraction form
    303,058.70/455,572.20 = 214,922.60/x
  3. Step 3: Cross multiply
    303,058.70x = 455,572.20 × 214,922.60
  4. Step 4: Simplify right side
    303,058.70x = 97,912,761,711.72
  5. Step 5: Solve for x
    x = 97,912,761,711.72/303,058.70
  6. Step 6: Final answer
    x = 323,081.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.