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Finding the Fourth Proportional to 377,077.62, 520,219.90 and 215,846.52

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Solution

The fourth proportional to 377,077.62, 520,219.90 and 215,846.52 is: 297,783.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,077.62 : 520,219.90 = 215,846.52 : x
  2. Step 2: Convert to fraction form
    377,077.62/520,219.90 = 215,846.52/x
  3. Step 3: Cross multiply
    377,077.62x = 520,219.90 × 215,846.52
  4. Step 4: Simplify right side
    377,077.62x = 112,287,655,049.75
  5. Step 5: Solve for x
    x = 112,287,655,049.75/377,077.62
  6. Step 6: Final answer
    x = 297,783.93

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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.