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Finding the Fourth Proportional to 270,131.58, 405,214.65 and 103,919.58

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Solution

The fourth proportional to 270,131.58, 405,214.65 and 103,919.58 is: 155,886.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,131.58 : 405,214.65 = 103,919.58 : x
  2. Step 2: Convert to fraction form
    270,131.58/405,214.65 = 103,919.58/x
  3. Step 3: Cross multiply
    270,131.58x = 405,214.65 × 103,919.58
  4. Step 4: Simplify right side
    270,131.58x = 42,109,736,237.85
  5. Step 5: Solve for x
    x = 42,109,736,237.85/270,131.58
  6. Step 6: Final answer
    x = 155,886.02

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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.