Home / 389,213.20-583,366.20-178,872.40

Finding the Fourth Proportional to 389,213.20, 583,366.20 and 178,872.40

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Solution

The fourth proportional to 389,213.20, 583,366.20 and 178,872.40 is: 268,100.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,213.20 : 583,366.20 = 178,872.40 : x
  2. Step 2: Convert to fraction form
    389,213.20/583,366.20 = 178,872.40/x
  3. Step 3: Cross multiply
    389,213.20x = 583,366.20 × 178,872.40
  4. Step 4: Simplify right side
    389,213.20x = 104,348,112,272.88
  5. Step 5: Solve for x
    x = 104,348,112,272.88/389,213.20
  6. Step 6: Final answer
    x = 268,100.14

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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.