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Finding the Fourth Proportional to 378,209.40, 566,730.90 and 328,054.20

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Solution

The fourth proportional to 378,209.40, 566,730.90 and 328,054.20 is: 491,575.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,209.40 : 566,730.90 = 328,054.20 : x
  2. Step 2: Convert to fraction form
    378,209.40/566,730.90 = 328,054.20/x
  3. Step 3: Cross multiply
    378,209.40x = 566,730.90 × 328,054.20
  4. Step 4: Simplify right side
    378,209.40x = 185,918,452,014.78
  5. Step 5: Solve for x
    x = 185,918,452,014.78/378,209.40
  6. Step 6: Final answer
    x = 491,575.44

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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.