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Finding the Fourth Proportional to 377,468.63, 520,921.08 and 216,354.77

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Solution

The fourth proportional to 377,468.63, 520,921.08 and 216,354.77 is: 298,577.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,468.63 : 520,921.08 = 216,354.77 : x
  2. Step 2: Convert to fraction form
    377,468.63/520,921.08 = 216,354.77/x
  3. Step 3: Cross multiply
    377,468.63x = 520,921.08 × 216,354.77
  4. Step 4: Simplify right side
    377,468.63x = 112,703,760,451.55
  5. Step 5: Solve for x
    x = 112,703,760,451.55/377,468.63
  6. Step 6: Final answer
    x = 298,577.82

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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.