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Finding the Fourth Proportional to 346,843.20, 520,135.20 and 136,437.60

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Solution

The fourth proportional to 346,843.20, 520,135.20 and 136,437.60 is: 204,605.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,843.20 : 520,135.20 = 136,437.60 : x
  2. Step 2: Convert to fraction form
    346,843.20/520,135.20 = 136,437.60/x
  3. Step 3: Cross multiply
    346,843.20x = 520,135.20 × 136,437.60
  4. Step 4: Simplify right side
    346,843.20x = 70,965,998,363.52
  5. Step 5: Solve for x
    x = 70,965,998,363.52/346,843.20
  6. Step 6: Final answer
    x = 204,605.42

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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.