Home / 377,514.24-520,981.86-216,399.78

Finding the Fourth Proportional to 377,514.24, 520,981.86 and 216,399.78

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Solution

The fourth proportional to 377,514.24, 520,981.86 and 216,399.78 is: 298,638.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,514.24 : 520,981.86 = 216,399.78 : x
  2. Step 2: Convert to fraction form
    377,514.24/520,981.86 = 216,399.78/x
  3. Step 3: Cross multiply
    377,514.24x = 520,981.86 × 216,399.78
  4. Step 4: Simplify right side
    377,514.24x = 112,740,359,887.99
  5. Step 5: Solve for x
    x = 112,740,359,887.99/377,514.24
  6. Step 6: Final answer
    x = 298,638.69

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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.