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Finding the Fourth Proportional to 384,552.40, 576,310.20 and 257,832.40

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Solution

The fourth proportional to 384,552.40, 576,310.20 and 257,832.40 is: 386,401.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,552.40 : 576,310.20 = 257,832.40 : x
  2. Step 2: Convert to fraction form
    384,552.40/576,310.20 = 257,832.40/x
  3. Step 3: Cross multiply
    384,552.40x = 576,310.20 × 257,832.40
  4. Step 4: Simplify right side
    384,552.40x = 148,591,442,010.48
  5. Step 5: Solve for x
    x = 148,591,442,010.48/384,552.40
  6. Step 6: Final answer
    x = 386,401.03

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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.