Home / 280,496.52-387,086.04-153,172.62

Finding the Fourth Proportional to 280,496.52, 387,086.04 and 153,172.62

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Solution

The fourth proportional to 280,496.52, 387,086.04 and 153,172.62 is: 211,378.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,496.52 : 387,086.04 = 153,172.62 : x
  2. Step 2: Convert to fraction form
    280,496.52/387,086.04 = 153,172.62/x
  3. Step 3: Cross multiply
    280,496.52x = 387,086.04 × 153,172.62
  4. Step 4: Simplify right side
    280,496.52x = 59,290,982,912.22
  5. Step 5: Solve for x
    x = 59,290,982,912.22/280,496.52
  6. Step 6: Final answer
    x = 211,378.68

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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.