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Finding the Fourth Proportional to 380,960.60, 571,440.90 and 192,003.80

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Solution

The fourth proportional to 380,960.60, 571,440.90 and 192,003.80 is: 288,005.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,960.60 : 571,440.90 = 192,003.80 : x
  2. Step 2: Convert to fraction form
    380,960.60/571,440.90 = 192,003.80/x
  3. Step 3: Cross multiply
    380,960.60x = 571,440.90 × 192,003.80
  4. Step 4: Simplify right side
    380,960.60x = 109,718,824,275.42
  5. Step 5: Solve for x
    x = 109,718,824,275.42/380,960.60
  6. Step 6: Final answer
    x = 288,005.70

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1.5x scale

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.