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Finding the Fourth Proportional to 375,465.52, 518,138.10 and 203,380.20

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Solution

The fourth proportional to 375,465.52, 518,138.10 and 203,380.20 is: 280,662.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,465.52 : 518,138.10 = 203,380.20 : x
  2. Step 2: Convert to fraction form
    375,465.52/518,138.10 = 203,380.20/x
  3. Step 3: Cross multiply
    375,465.52x = 518,138.10 × 203,380.20
  4. Step 4: Simplify right side
    375,465.52x = 105,379,030,405.62
  5. Step 5: Solve for x
    x = 105,379,030,405.62/375,465.52
  6. Step 6: Final answer
    x = 280,662.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.