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Finding the Fourth Proportional to 228,613.32, 315,522.27 and 137,982.15

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Solution

The fourth proportional to 228,613.32, 315,522.27 and 137,982.15 is: 190,437.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,613.32 : 315,522.27 = 137,982.15 : x
  2. Step 2: Convert to fraction form
    228,613.32/315,522.27 = 137,982.15/x
  3. Step 3: Cross multiply
    228,613.32x = 315,522.27 × 137,982.15
  4. Step 4: Simplify right side
    228,613.32x = 43,536,441,187.48
  5. Step 5: Solve for x
    x = 43,536,441,187.48/228,613.32
  6. Step 6: Final answer
    x = 190,437.03

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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.