Home / 379,645.75-523,922.07-209,890.81

Finding the Fourth Proportional to 379,645.75, 523,922.07 and 209,890.81

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Solution

The fourth proportional to 379,645.75, 523,922.07 and 209,890.81 is: 289,655.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,645.75 : 523,922.07 = 209,890.81 : x
  2. Step 2: Convert to fraction form
    379,645.75/523,922.07 = 209,890.81/x
  3. Step 3: Cross multiply
    379,645.75x = 523,922.07 × 209,890.81
  4. Step 4: Simplify right side
    379,645.75x = 109,966,427,649.18
  5. Step 5: Solve for x
    x = 109,966,427,649.18/379,645.75
  6. Step 6: Final answer
    x = 289,655.36

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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.