Home / 280,455.39-387,213.54-173,183.04

Finding the Fourth Proportional to 280,455.39, 387,213.54 and 173,183.04

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Solution

The fourth proportional to 280,455.39, 387,213.54 and 173,183.04 is: 239,106.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,455.39 : 387,213.54 = 173,183.04 : x
  2. Step 2: Convert to fraction form
    280,455.39/387,213.54 = 173,183.04/x
  3. Step 3: Cross multiply
    280,455.39x = 387,213.54 × 173,183.04
  4. Step 4: Simplify right side
    280,455.39x = 67,058,817,986.36
  5. Step 5: Solve for x
    x = 67,058,817,986.36/280,455.39
  6. Step 6: Final answer
    x = 239,106.90

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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.