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Finding the Fourth Proportional to 381,200.19, 571,802.24 and 128,482.86

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Solution

The fourth proportional to 381,200.19, 571,802.24 and 128,482.86 is: 192,724.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,200.19 : 571,802.24 = 128,482.86 : x
  2. Step 2: Convert to fraction form
    381,200.19/571,802.24 = 128,482.86/x
  3. Step 3: Cross multiply
    381,200.19x = 571,802.24 × 128,482.86
  4. Step 4: Simplify right side
    381,200.19x = 73,466,787,149.61
  5. Step 5: Solve for x
    x = 73,466,787,149.61/381,200.19
  6. Step 6: Final answer
    x = 192,724.95

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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.