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Finding the Fourth Proportional to 377,632.86, 521,072.34 and 216,458.28

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Solution

The fourth proportional to 377,632.86, 521,072.34 and 216,458.28 is: 298,677.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,632.86 : 521,072.34 = 216,458.28 : x
  2. Step 2: Convert to fraction form
    377,632.86/521,072.34 = 216,458.28/x
  3. Step 3: Cross multiply
    377,632.86x = 521,072.34 × 216,458.28
  4. Step 4: Simplify right side
    377,632.86x = 112,790,422,471.98
  5. Step 5: Solve for x
    x = 112,790,422,471.98/377,632.86
  6. Step 6: Final answer
    x = 298,677.46

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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.