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Finding the Fourth Proportional to 228,323.60, 315,213.24 and 137,702.60

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Solution

The fourth proportional to 228,323.60, 315,213.24 and 137,702.60 is: 190,105.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,323.60 : 315,213.24 = 137,702.60 : x
  2. Step 2: Convert to fraction form
    228,323.60/315,213.24 = 137,702.60/x
  3. Step 3: Cross multiply
    228,323.60x = 315,213.24 × 137,702.60
  4. Step 4: Simplify right side
    228,323.60x = 43,405,682,702.42
  5. Step 5: Solve for x
    x = 43,405,682,702.42/228,323.60
  6. Step 6: Final answer
    x = 190,105.98

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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.