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Finding the Fourth Proportional to 346,791.20, 520,078.80 and 136,493.60

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Solution

The fourth proportional to 346,791.20, 520,078.80 and 136,493.60 is: 204,697.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,791.20 : 520,078.80 = 136,493.60 : x
  2. Step 2: Convert to fraction form
    346,791.20/520,078.80 = 136,493.60/x
  3. Step 3: Cross multiply
    346,791.20x = 520,078.80 × 136,493.60
  4. Step 4: Simplify right side
    346,791.20x = 70,987,427,695.68
  5. Step 5: Solve for x
    x = 70,987,427,695.68/346,791.20
  6. Step 6: Final answer
    x = 204,697.89

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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.