Home / 379,305.36-523,441.08-209,538.72

Finding the Fourth Proportional to 379,305.36, 523,441.08 and 209,538.72

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Solution

The fourth proportional to 379,305.36, 523,441.08 and 209,538.72 is: 289,163.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,305.36 : 523,441.08 = 209,538.72 : x
  2. Step 2: Convert to fraction form
    379,305.36/523,441.08 = 209,538.72/x
  3. Step 3: Cross multiply
    379,305.36x = 523,441.08 × 209,538.72
  4. Step 4: Simplify right side
    379,305.36x = 109,681,173,898.62
  5. Step 5: Solve for x
    x = 109,681,173,898.62/379,305.36
  6. Step 6: Final answer
    x = 289,163.26

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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.