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Finding the Fourth Proportional to 346,963.80, 519,408.90 and 206,650.20

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Solution

The fourth proportional to 346,963.80, 519,408.90 and 206,650.20 is: 309,357.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,963.80 : 519,408.90 = 206,650.20 : x
  2. Step 2: Convert to fraction form
    346,963.80/519,408.90 = 206,650.20/x
  3. Step 3: Cross multiply
    346,963.80x = 519,408.90 × 206,650.20
  4. Step 4: Simplify right side
    346,963.80x = 107,335,953,066.78
  5. Step 5: Solve for x
    x = 107,335,953,066.78/346,963.80
  6. Step 6: Final answer
    x = 309,357.79

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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.