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Finding the Fourth Proportional to 377,477.72, 520,921.02 and 216,342.29

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Solution

The fourth proportional to 377,477.72, 520,921.02 and 216,342.29 is: 298,553.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,477.72 : 520,921.02 = 216,342.29 : x
  2. Step 2: Convert to fraction form
    377,477.72/520,921.02 = 216,342.29/x
  3. Step 3: Cross multiply
    377,477.72x = 520,921.02 × 216,342.29
  4. Step 4: Simplify right side
    377,477.72x = 112,697,246,375.94
  5. Step 5: Solve for x
    x = 112,697,246,375.94/377,477.72
  6. Step 6: Final answer
    x = 298,553.37

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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.