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Finding the Fourth Proportional to 378,612.60, 567,918.90 and 112,414.20

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Solution

The fourth proportional to 378,612.60, 567,918.90 and 112,414.20 is: 168,621.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,612.60 : 567,918.90 = 112,414.20 : x
  2. Step 2: Convert to fraction form
    378,612.60/567,918.90 = 112,414.20/x
  3. Step 3: Cross multiply
    378,612.60x = 567,918.90 × 112,414.20
  4. Step 4: Simplify right side
    378,612.60x = 63,842,148,808.38
  5. Step 5: Solve for x
    x = 63,842,148,808.38/378,612.60
  6. Step 6: Final answer
    x = 168,621.30

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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.