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Finding the Fourth Proportional to 280,863.85, 387,795.06 and 173,580.97

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Solution

The fourth proportional to 280,863.85, 387,795.06 and 173,580.97 is: 239,667.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,863.85 : 387,795.06 = 173,580.97 : x
  2. Step 2: Convert to fraction form
    280,863.85/387,795.06 = 173,580.97/x
  3. Step 3: Cross multiply
    280,863.85x = 387,795.06 × 173,580.97
  4. Step 4: Simplify right side
    280,863.85x = 67,313,839,869.13
  5. Step 5: Solve for x
    x = 67,313,839,869.13/280,863.85
  6. Step 6: Final answer
    x = 239,667.16

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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.