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Finding the Fourth Proportional to 340,353.94, 469,680.21 and 213,099.70

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Solution

The fourth proportional to 340,353.94, 469,680.21 and 213,099.70 is: 294,072.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,353.94 : 469,680.21 = 213,099.70 : x
  2. Step 2: Convert to fraction form
    340,353.94/469,680.21 = 213,099.70/x
  3. Step 3: Cross multiply
    340,353.94x = 469,680.21 × 213,099.70
  4. Step 4: Simplify right side
    340,353.94x = 100,088,711,846.94
  5. Step 5: Solve for x
    x = 100,088,711,846.94/340,353.94
  6. Step 6: Final answer
    x = 294,072.43

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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.