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Finding the Fourth Proportional to 341,909.20, 512,710.20 and 131,477.20

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Solution

The fourth proportional to 341,909.20, 512,710.20 and 131,477.20 is: 197,156.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,909.20 : 512,710.20 = 131,477.20 : x
  2. Step 2: Convert to fraction form
    341,909.20/512,710.20 = 131,477.20/x
  3. Step 3: Cross multiply
    341,909.20x = 512,710.20 × 131,477.20
  4. Step 4: Simplify right side
    341,909.20x = 67,409,701,507.44
  5. Step 5: Solve for x
    x = 67,409,701,507.44/341,909.20
  6. Step 6: Final answer
    x = 197,156.73

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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.