Home / 285,101.85-393,441.60-154,279.52

Finding the Fourth Proportional to 285,101.85, 393,441.60 and 154,279.52

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Solution

The fourth proportional to 285,101.85, 393,441.60 and 154,279.52 is: 212,906.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,101.85 : 393,441.60 = 154,279.52 : x
  2. Step 2: Convert to fraction form
    285,101.85/393,441.60 = 154,279.52/x
  3. Step 3: Cross multiply
    285,101.85x = 393,441.60 × 154,279.52
  4. Step 4: Simplify right side
    285,101.85x = 60,699,979,228.82
  5. Step 5: Solve for x
    x = 60,699,979,228.82/285,101.85
  6. Step 6: Final answer
    x = 212,906.30

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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.