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Finding the Fourth Proportional to 215,405.35, 297,264.62 and 119,918.50

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Solution

The fourth proportional to 215,405.35, 297,264.62 and 119,918.50 is: 165,490.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,405.35 : 297,264.62 = 119,918.50 : x
  2. Step 2: Convert to fraction form
    215,405.35/297,264.62 = 119,918.50/x
  3. Step 3: Cross multiply
    215,405.35x = 297,264.62 × 119,918.50
  4. Step 4: Simplify right side
    215,405.35x = 35,647,527,333.47
  5. Step 5: Solve for x
    x = 35,647,527,333.47/215,405.35
  6. Step 6: Final answer
    x = 165,490.45

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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.