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Finding the Fourth Proportional to 377,212.80, 520,560 and 216,081.92

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Solution

The fourth proportional to 377,212.80, 520,560 and 216,081.92 is: 298,196.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,212.80 : 520,560 = 216,081.92 : x
  2. Step 2: Convert to fraction form
    377,212.80/520,560 = 216,081.92/x
  3. Step 3: Cross multiply
    377,212.80x = 520,560 × 216,081.92
  4. Step 4: Simplify right side
    377,212.80x = 112,483,604,275.20
  5. Step 5: Solve for x
    x = 112,483,604,275.20/377,212.80
  6. Step 6: Final answer
    x = 298,196.68

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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.