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Finding the Fourth Proportional to 422,740.20, 583,363.14 and 253,067.88

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Solution

The fourth proportional to 422,740.20, 583,363.14 and 253,067.88 is: 349,222.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,740.20 : 583,363.14 = 253,067.88 : x
  2. Step 2: Convert to fraction form
    422,740.20/583,363.14 = 253,067.88/x
  3. Step 3: Cross multiply
    422,740.20x = 583,363.14 × 253,067.88
  4. Step 4: Simplify right side
    422,740.20x = 147,630,473,109.94
  5. Step 5: Solve for x
    x = 147,630,473,109.94/422,740.20
  6. Step 6: Final answer
    x = 349,222.70

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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.