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Finding the Fourth Proportional to 378,213.60, 567,320.40 and 112,015.20

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Solution

The fourth proportional to 378,213.60, 567,320.40 and 112,015.20 is: 168,022.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,213.60 : 567,320.40 = 112,015.20 : x
  2. Step 2: Convert to fraction form
    378,213.60/567,320.40 = 112,015.20/x
  3. Step 3: Cross multiply
    378,213.60x = 567,320.40 × 112,015.20
  4. Step 4: Simplify right side
    378,213.60x = 63,548,508,070.08
  5. Step 5: Solve for x
    x = 63,548,508,070.08/378,213.60
  6. Step 6: Final answer
    x = 168,022.80

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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.