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Finding the Fourth Proportional to 377,350.79, 520,735.64 and 216,300.78

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Solution

The fourth proportional to 377,350.79, 520,735.64 and 216,300.78 is: 298,490.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,350.79 : 520,735.64 = 216,300.78 : x
  2. Step 2: Convert to fraction form
    377,350.79/520,735.64 = 216,300.78/x
  3. Step 3: Cross multiply
    377,350.79x = 520,735.64 × 216,300.78
  4. Step 4: Simplify right side
    377,350.79x = 112,635,524,024.30
  5. Step 5: Solve for x
    x = 112,635,524,024.30/377,350.79
  6. Step 6: Final answer
    x = 298,490.23

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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.