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Finding the Fourth Proportional to 377,013, 520,133.58 and 279,129.36

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Solution

The fourth proportional to 377,013, 520,133.58 and 279,129.36 is: 385,091.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,013 : 520,133.58 = 279,129.36 : x
  2. Step 2: Convert to fraction form
    377,013/520,133.58 = 279,129.36/x
  3. Step 3: Cross multiply
    377,013x = 520,133.58 × 279,129.36
  4. Step 4: Simplify right side
    377,013x = 145,184,553,299.91
  5. Step 5: Solve for x
    x = 145,184,553,299.91/377,013
  6. Step 6: Final answer
    x = 385,091.64

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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.