Home / 309,354.61-426,815.35-194,747.66

Finding the Fourth Proportional to 309,354.61, 426,815.35 and 194,747.66

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Solution

The fourth proportional to 309,354.61, 426,815.35 and 194,747.66 is: 268,692.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,354.61 : 426,815.35 = 194,747.66 : x
  2. Step 2: Convert to fraction form
    309,354.61/426,815.35 = 194,747.66/x
  3. Step 3: Cross multiply
    309,354.61x = 426,815.35 × 194,747.66
  4. Step 4: Simplify right side
    309,354.61x = 83,121,290,664.58
  5. Step 5: Solve for x
    x = 83,121,290,664.58/309,354.61
  6. Step 6: Final answer
    x = 268,692.59

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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.