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Finding the Fourth Proportional to 228,754.64, 343,177.78 and 79,000.40

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Solution

The fourth proportional to 228,754.64, 343,177.78 and 79,000.40 is: 118,516.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,754.64 : 343,177.78 = 79,000.40 : x
  2. Step 2: Convert to fraction form
    228,754.64/343,177.78 = 79,000.40/x
  3. Step 3: Cross multiply
    228,754.64x = 343,177.78 × 79,000.40
  4. Step 4: Simplify right side
    228,754.64x = 27,111,181,891.11
  5. Step 5: Solve for x
    x = 27,111,181,891.11/228,754.64
  6. Step 6: Final answer
    x = 118,516.42

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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.