Home / 379,649.24-523,889.64-209,870

Finding the Fourth Proportional to 379,649.24, 523,889.64 and 209,870

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Solution

The fourth proportional to 379,649.24, 523,889.64 and 209,870 is: 289,606.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,649.24 : 523,889.64 = 209,870 : x
  2. Step 2: Convert to fraction form
    379,649.24/523,889.64 = 209,870/x
  3. Step 3: Cross multiply
    379,649.24x = 523,889.64 × 209,870
  4. Step 4: Simplify right side
    379,649.24x = 109,948,718,746.80
  5. Step 5: Solve for x
    x = 109,948,718,746.80/379,649.24
  6. Step 6: Final answer
    x = 289,606.06

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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.