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Finding the Fourth Proportional to 270,619.92, 405,486.66 and 144,125.88

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Solution

The fourth proportional to 270,619.92, 405,486.66 and 144,125.88 is: 215,952.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,619.92 : 405,486.66 = 144,125.88 : x
  2. Step 2: Convert to fraction form
    270,619.92/405,486.66 = 144,125.88/x
  3. Step 3: Cross multiply
    270,619.92x = 405,486.66 × 144,125.88
  4. Step 4: Simplify right side
    270,619.92x = 58,441,121,700.76
  5. Step 5: Solve for x
    x = 58,441,121,700.76/270,619.92
  6. Step 6: Final answer
    x = 215,952.77

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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.