Home / 345,491.37-518,237.10-134,981.73

Finding the Fourth Proportional to 345,491.37, 518,237.10 and 134,981.73

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Solution

The fourth proportional to 345,491.37, 518,237.10 and 134,981.73 is: 202,472.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,491.37 : 518,237.10 = 134,981.73 : x
  2. Step 2: Convert to fraction form
    345,491.37/518,237.10 = 134,981.73/x
  3. Step 3: Cross multiply
    345,491.37x = 518,237.10 × 134,981.73
  4. Step 4: Simplify right side
    345,491.37x = 69,952,540,308.18
  5. Step 5: Solve for x
    x = 69,952,540,308.18/345,491.37
  6. Step 6: Final answer
    x = 202,472.61

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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.