Home / 377,861.20-521,496.12-216,712.79

Finding the Fourth Proportional to 377,861.20, 521,496.12 and 216,712.79

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Solution

The fourth proportional to 377,861.20, 521,496.12 and 216,712.79 is: 299,090.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,861.20 : 521,496.12 = 216,712.79 : x
  2. Step 2: Convert to fraction form
    377,861.20/521,496.12 = 216,712.79/x
  3. Step 3: Cross multiply
    377,861.20x = 521,496.12 × 216,712.79
  4. Step 4: Simplify right side
    377,861.20x = 113,014,876,531.89
  5. Step 5: Solve for x
    x = 113,014,876,531.89/377,861.20
  6. Step 6: Final answer
    x = 299,090.98

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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.