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Finding the Fourth Proportional to 215,235.66, 297,021.15 and 119,742.06

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Solution

The fourth proportional to 215,235.66, 297,021.15 and 119,742.06 is: 165,241.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,235.66 : 297,021.15 = 119,742.06 : x
  2. Step 2: Convert to fraction form
    215,235.66/297,021.15 = 119,742.06/x
  3. Step 3: Cross multiply
    215,235.66x = 297,021.15 × 119,742.06
  4. Step 4: Simplify right side
    215,235.66x = 35,565,924,364.57
  5. Step 5: Solve for x
    x = 35,565,924,364.57/215,235.66
  6. Step 6: Final answer
    x = 165,241.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.