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Finding the Fourth Proportional to 280,863.35, 387,794.37 and 173,580.47

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Solution

The fourth proportional to 280,863.35, 387,794.37 and 173,580.47 is: 239,666.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,863.35 : 387,794.37 = 173,580.47 : x
  2. Step 2: Convert to fraction form
    280,863.35/387,794.37 = 173,580.47/x
  3. Step 3: Cross multiply
    280,863.35x = 387,794.37 × 173,580.47
  4. Step 4: Simplify right side
    280,863.35x = 67,313,526,201.08
  5. Step 5: Solve for x
    x = 67,313,526,201.08/280,863.35
  6. Step 6: Final answer
    x = 239,666.47

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1.5x scale

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.