Home / 278,764.20-384,695.06-151,439.90

Finding the Fourth Proportional to 278,764.20, 384,695.06 and 151,439.90

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Solution

The fourth proportional to 278,764.20, 384,695.06 and 151,439.90 is: 208,987.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,764.20 : 384,695.06 = 151,439.90 : x
  2. Step 2: Convert to fraction form
    278,764.20/384,695.06 = 151,439.90/x
  3. Step 3: Cross multiply
    278,764.20x = 384,695.06 × 151,439.90
  4. Step 4: Simplify right side
    278,764.20x = 58,258,178,736.22
  5. Step 5: Solve for x
    x = 58,258,178,736.22/278,764.20
  6. Step 6: Final answer
    x = 208,987.30

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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.