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Finding the Fourth Proportional to 377,520.72, 520,978.67 and 207,754.85

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Solution

The fourth proportional to 377,520.72, 520,978.67 and 207,754.85 is: 286,701.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,520.72 : 520,978.67 = 207,754.85 : x
  2. Step 2: Convert to fraction form
    377,520.72/520,978.67 = 207,754.85/x
  3. Step 3: Cross multiply
    377,520.72x = 520,978.67 × 207,754.85
  4. Step 4: Simplify right side
    377,520.72x = 108,235,841,795.38
  5. Step 5: Solve for x
    x = 108,235,841,795.38/377,520.72
  6. Step 6: Final answer
    x = 286,701.73

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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.