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Finding the Fourth Proportional to 247,063.90, 340,691.79 and 211,372.06

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Solution

The fourth proportional to 247,063.90, 340,691.79 and 211,372.06 is: 291,474.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,063.90 : 340,691.79 = 211,372.06 : x
  2. Step 2: Convert to fraction form
    247,063.90/340,691.79 = 211,372.06/x
  3. Step 3: Cross multiply
    247,063.90x = 340,691.79 × 211,372.06
  4. Step 4: Simplify right side
    247,063.90x = 72,012,725,477.39
  5. Step 5: Solve for x
    x = 72,012,725,477.39/247,063.90
  6. Step 6: Final answer
    x = 291,474.09

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1.5x scale

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.