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Finding the Fourth Proportional to 221,058.40, 331,587.60 and 54,846.40

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Solution

The fourth proportional to 221,058.40, 331,587.60 and 54,846.40 is: 82,269.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,058.40 : 331,587.60 = 54,846.40 : x
  2. Step 2: Convert to fraction form
    221,058.40/331,587.60 = 54,846.40/x
  3. Step 3: Cross multiply
    221,058.40x = 331,587.60 × 54,846.40
  4. Step 4: Simplify right side
    221,058.40x = 18,186,386,144.64
  5. Step 5: Solve for x
    x = 18,186,386,144.64/221,058.40
  6. Step 6: Final answer
    x = 82,269.60

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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.