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Finding the Fourth Proportional to 214,356.04, 321,601 and 129,060.40

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Solution

The fourth proportional to 214,356.04, 321,601 and 129,060.40 is: 193,630.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,356.04 : 321,601 = 129,060.40 : x
  2. Step 2: Convert to fraction form
    214,356.04/321,601 = 129,060.40/x
  3. Step 3: Cross multiply
    214,356.04x = 321,601 × 129,060.40
  4. Step 4: Simplify right side
    214,356.04x = 41,505,953,700.40
  5. Step 5: Solve for x
    x = 41,505,953,700.40/214,356.04
  6. Step 6: Final answer
    x = 193,630.90

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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.