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Finding the Fourth Proportional to 270,134.40, 405,201.60 and 70,454.28

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Solution

The fourth proportional to 270,134.40, 405,201.60 and 70,454.28 is: 105,681.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,134.40 : 405,201.60 = 70,454.28 : x
  2. Step 2: Convert to fraction form
    270,134.40/405,201.60 = 70,454.28/x
  3. Step 3: Cross multiply
    270,134.40x = 405,201.60 × 70,454.28
  4. Step 4: Simplify right side
    270,134.40x = 28,548,186,982.85
  5. Step 5: Solve for x
    x = 28,548,186,982.85/270,134.40
  6. Step 6: Final answer
    x = 105,681.42

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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.