Home / 379,284.08-523,404.60-209,516.72

Finding the Fourth Proportional to 379,284.08, 523,404.60 and 209,516.72

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Solution

The fourth proportional to 379,284.08, 523,404.60 and 209,516.72 is: 289,128.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,284.08 : 523,404.60 = 209,516.72 : x
  2. Step 2: Convert to fraction form
    379,284.08/523,404.60 = 209,516.72/x
  3. Step 3: Cross multiply
    379,284.08x = 523,404.60 × 209,516.72
  4. Step 4: Simplify right side
    379,284.08x = 109,662,015,024.91
  5. Step 5: Solve for x
    x = 109,662,015,024.91/379,284.08
  6. Step 6: Final answer
    x = 289,128.97

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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.