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Finding the Fourth Proportional to 228,843.90, 343,265.85 and 153,999.90

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Solution

The fourth proportional to 228,843.90, 343,265.85 and 153,999.90 is: 230,999.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,843.90 : 343,265.85 = 153,999.90 : x
  2. Step 2: Convert to fraction form
    228,843.90/343,265.85 = 153,999.90/x
  3. Step 3: Cross multiply
    228,843.90x = 343,265.85 × 153,999.90
  4. Step 4: Simplify right side
    228,843.90x = 52,862,906,573.42
  5. Step 5: Solve for x
    x = 52,862,906,573.42/228,843.90
  6. Step 6: Final answer
    x = 230,999.85

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1.5x scale

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.