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Finding the Fourth Proportional to 219,778.56, 303,243.48 and 151,855.20

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Solution

The fourth proportional to 219,778.56, 303,243.48 and 151,855.20 is: 209,524.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,778.56 : 303,243.48 = 151,855.20 : x
  2. Step 2: Convert to fraction form
    219,778.56/303,243.48 = 151,855.20/x
  3. Step 3: Cross multiply
    219,778.56x = 303,243.48 × 151,855.20
  4. Step 4: Simplify right side
    219,778.56x = 46,049,099,304.10
  5. Step 5: Solve for x
    x = 46,049,099,304.10/219,778.56
  6. Step 6: Final answer
    x = 209,524.98

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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.