Home / 743,393.52-1,115,132.64-210,872.88

Finding the Fourth Proportional to 743,393.52, 1,115,132.64 and 210,872.88

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Solution

The fourth proportional to 743,393.52, 1,115,132.64 and 210,872.88 is: 316,321.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,393.52 : 1,115,132.64 = 210,872.88 : x
  2. Step 2: Convert to fraction form
    743,393.52/1,115,132.64 = 210,872.88/x
  3. Step 3: Cross multiply
    743,393.52x = 1,115,132.64 × 210,872.88
  4. Step 4: Simplify right side
    743,393.52x = 235,151,231,378.80
  5. Step 5: Solve for x
    x = 235,151,231,378.80/743,393.52
  6. Step 6: Final answer
    x = 316,321.34

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.