Home / 278,546.14-384,398.13-151,221.63

Finding the Fourth Proportional to 278,546.14, 384,398.13 and 151,221.63

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Solution

The fourth proportional to 278,546.14, 384,398.13 and 151,221.63 is: 208,688.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,546.14 : 384,398.13 = 151,221.63 : x
  2. Step 2: Convert to fraction form
    278,546.14/384,398.13 = 151,221.63/x
  3. Step 3: Cross multiply
    278,546.14x = 384,398.13 × 151,221.63
  4. Step 4: Simplify right side
    278,546.14x = 58,129,311,787.55
  5. Step 5: Solve for x
    x = 58,129,311,787.55/278,546.14
  6. Step 6: Final answer
    x = 208,688.27

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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.