Home / 456,749.40-685,124.10-141,238.20

Finding the Fourth Proportional to 456,749.40, 685,124.10 and 141,238.20

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Solution

The fourth proportional to 456,749.40, 685,124.10 and 141,238.20 is: 211,857.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,749.40 : 685,124.10 = 141,238.20 : x
  2. Step 2: Convert to fraction form
    456,749.40/685,124.10 = 141,238.20/x
  3. Step 3: Cross multiply
    456,749.40x = 685,124.10 × 141,238.20
  4. Step 4: Simplify right side
    456,749.40x = 96,765,694,660.62
  5. Step 5: Solve for x
    x = 96,765,694,660.62/456,749.40
  6. Step 6: Final answer
    x = 211,857.30

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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.