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Finding the Fourth Proportional to 228,439.74, 315,276.22 and 137,844.60

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Solution

The fourth proportional to 228,439.74, 315,276.22 and 137,844.60 is: 190,243.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,439.74 : 315,276.22 = 137,844.60 : x
  2. Step 2: Convert to fraction form
    228,439.74/315,276.22 = 137,844.60/x
  3. Step 3: Cross multiply
    228,439.74x = 315,276.22 × 137,844.60
  4. Step 4: Simplify right side
    228,439.74x = 43,459,124,435.41
  5. Step 5: Solve for x
    x = 43,459,124,435.41/228,439.74
  6. Step 6: Final answer
    x = 190,243.28

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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.