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Finding the Fourth Proportional to 278,696.40, 384,596.88 and 151,370.88

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Solution

The fourth proportional to 278,696.40, 384,596.88 and 151,370.88 is: 208,889.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,696.40 : 384,596.88 = 151,370.88 : x
  2. Step 2: Convert to fraction form
    278,696.40/384,596.88 = 151,370.88/x
  3. Step 3: Cross multiply
    278,696.40x = 384,596.88 × 151,370.88
  4. Step 4: Simplify right side
    278,696.40x = 58,216,768,170.85
  5. Step 5: Solve for x
    x = 58,216,768,170.85/278,696.40
  6. Step 6: Final answer
    x = 208,889.56

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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.