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Finding the Fourth Proportional to 381,298.43, 526,192.44 and 211,532.51

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Solution

The fourth proportional to 381,298.43, 526,192.44 and 211,532.51 is: 291,915.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,298.43 : 526,192.44 = 211,532.51 : x
  2. Step 2: Convert to fraction form
    381,298.43/526,192.44 = 211,532.51/x
  3. Step 3: Cross multiply
    381,298.43x = 526,192.44 × 211,532.51
  4. Step 4: Simplify right side
    381,298.43x = 111,306,807,576.22
  5. Step 5: Solve for x
    x = 111,306,807,576.22/381,298.43
  6. Step 6: Final answer
    x = 291,915.20

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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.