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Finding the Fourth Proportional to 372,479.40, 558,719.10 and 91,996.65

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Solution

The fourth proportional to 372,479.40, 558,719.10 and 91,996.65 is: 137,994.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,479.40 : 558,719.10 = 91,996.65 : x
  2. Step 2: Convert to fraction form
    372,479.40/558,719.10 = 91,996.65/x
  3. Step 3: Cross multiply
    372,479.40x = 558,719.10 × 91,996.65
  4. Step 4: Simplify right side
    372,479.40x = 51,400,285,491.02
  5. Step 5: Solve for x
    x = 51,400,285,491.02/372,479.40
  6. Step 6: Final answer
    x = 137,994.98

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Similar ratio
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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.