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Finding the Fourth Proportional to 228,514.40, 342,080.40 and 203,631.20

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Solution

The fourth proportional to 228,514.40, 342,080.40 and 203,631.20 is: 304,830.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,514.40 : 342,080.40 = 203,631.20 : x
  2. Step 2: Convert to fraction form
    228,514.40/342,080.40 = 203,631.20/x
  3. Step 3: Cross multiply
    228,514.40x = 342,080.40 × 203,631.20
  4. Step 4: Simplify right side
    228,514.40x = 69,658,242,348.48
  5. Step 5: Solve for x
    x = 69,658,242,348.48/228,514.40
  6. Step 6: Final answer
    x = 304,830.87

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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.