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Finding the Fourth Proportional to 199,611.58, 299,573.78 and 139,247.42

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Solution

The fourth proportional to 199,611.58, 299,573.78 and 139,247.42 is: 208,980.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,611.58 : 299,573.78 = 139,247.42 : x
  2. Step 2: Convert to fraction form
    199,611.58/299,573.78 = 139,247.42/x
  3. Step 3: Cross multiply
    199,611.58x = 299,573.78 × 139,247.42
  4. Step 4: Simplify right side
    199,611.58x = 41,714,875,964.65
  5. Step 5: Solve for x
    x = 41,714,875,964.65/199,611.58
  6. Step 6: Final answer
    x = 208,980.24

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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.