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Finding the Fourth Proportional to 306,020.61, 422,308.65 and 170,067.24

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Solution

The fourth proportional to 306,020.61, 422,308.65 and 170,067.24 is: 234,692.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,020.61 : 422,308.65 = 170,067.24 : x
  2. Step 2: Convert to fraction form
    306,020.61/422,308.65 = 170,067.24/x
  3. Step 3: Cross multiply
    306,020.61x = 422,308.65 × 170,067.24
  4. Step 4: Simplify right side
    306,020.61x = 71,820,866,533.63
  5. Step 5: Solve for x
    x = 71,820,866,533.63/306,020.61
  6. Step 6: Final answer
    x = 234,692.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.