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Finding the Fourth Proportional to 270,019.40, 405,029.10 and 92,499.80

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Solution

The fourth proportional to 270,019.40, 405,029.10 and 92,499.80 is: 138,749.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,019.40 : 405,029.10 = 92,499.80 : x
  2. Step 2: Convert to fraction form
    270,019.40/405,029.10 = 92,499.80/x
  3. Step 3: Cross multiply
    270,019.40x = 405,029.10 × 92,499.80
  4. Step 4: Simplify right side
    270,019.40x = 37,465,110,744.18
  5. Step 5: Solve for x
    x = 37,465,110,744.18/270,019.40
  6. Step 6: Final answer
    x = 138,749.70

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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.