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Finding the Fourth Proportional to 339,206.08, 508,919.72 and 170,639.40

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Solution

The fourth proportional to 339,206.08, 508,919.72 and 170,639.40 is: 256,014.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,206.08 : 508,919.72 = 170,639.40 : x
  2. Step 2: Convert to fraction form
    339,206.08/508,919.72 = 170,639.40/x
  3. Step 3: Cross multiply
    339,206.08x = 508,919.72 × 170,639.40
  4. Step 4: Simplify right side
    339,206.08x = 86,841,755,668.97
  5. Step 5: Solve for x
    x = 86,841,755,668.97/339,206.08
  6. Step 6: Final answer
    x = 256,014.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.