Home / 379,612.31-523,844.43-209,835.50

Finding the Fourth Proportional to 379,612.31, 523,844.43 and 209,835.50

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Solution

The fourth proportional to 379,612.31, 523,844.43 and 209,835.50 is: 289,561.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,612.31 : 523,844.43 = 209,835.50 : x
  2. Step 2: Convert to fraction form
    379,612.31/523,844.43 = 209,835.50/x
  3. Step 3: Cross multiply
    379,612.31x = 523,844.43 × 209,835.50
  4. Step 4: Simplify right side
    379,612.31x = 109,921,157,891.27
  5. Step 5: Solve for x
    x = 109,921,157,891.27/379,612.31
  6. Step 6: Final answer
    x = 289,561.63

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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.