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Finding the Fourth Proportional to 270,092.40, 405,138.60 and 268,342.80

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Solution

The fourth proportional to 270,092.40, 405,138.60 and 268,342.80 is: 402,514.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,092.40 : 405,138.60 = 268,342.80 : x
  2. Step 2: Convert to fraction form
    270,092.40/405,138.60 = 268,342.80/x
  3. Step 3: Cross multiply
    270,092.40x = 405,138.60 × 268,342.80
  4. Step 4: Simplify right side
    270,092.40x = 108,716,026,312.08
  5. Step 5: Solve for x
    x = 108,716,026,312.08/270,092.40
  6. Step 6: Final answer
    x = 402,514.20

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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.