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Finding the Fourth Proportional to 228,388.98, 342,606.36 and 78,609.45

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Solution

The fourth proportional to 228,388.98, 342,606.36 and 78,609.45 is: 117,922.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,388.98 : 342,606.36 = 78,609.45 : x
  2. Step 2: Convert to fraction form
    228,388.98/342,606.36 = 78,609.45/x
  3. Step 3: Cross multiply
    228,388.98x = 342,606.36 × 78,609.45
  4. Step 4: Simplify right side
    228,388.98x = 26,932,097,526.10
  5. Step 5: Solve for x
    x = 26,932,097,526.10/228,388.98
  6. Step 6: Final answer
    x = 117,922.05

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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.