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Finding the Fourth Proportional to 381,491.60, 573,619.80 and 373,197.20

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Solution

The fourth proportional to 381,491.60, 573,619.80 and 373,197.20 is: 561,148.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,491.60 : 573,619.80 = 373,197.20 : x
  2. Step 2: Convert to fraction form
    381,491.60/573,619.80 = 373,197.20/x
  3. Step 3: Cross multiply
    381,491.60x = 573,619.80 × 373,197.20
  4. Step 4: Simplify right side
    381,491.60x = 214,073,303,224.56
  5. Step 5: Solve for x
    x = 214,073,303,224.56/381,491.60
  6. Step 6: Final answer
    x = 561,148.14

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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.