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Finding the Fourth Proportional to 247,076.80, 340,711.41 and 211,384.96

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Solution

The fourth proportional to 247,076.80, 340,711.41 and 211,384.96 is: 291,493.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,076.80 : 340,711.41 = 211,384.96 : x
  2. Step 2: Convert to fraction form
    247,076.80/340,711.41 = 211,384.96/x
  3. Step 3: Cross multiply
    247,076.80x = 340,711.41 × 211,384.96
  4. Step 4: Simplify right side
    247,076.80x = 72,021,267,715.31
  5. Step 5: Solve for x
    x = 72,021,267,715.31/247,076.80
  6. Step 6: Final answer
    x = 291,493.45

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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.