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Finding the Fourth Proportional to 228,628.58, 315,492.17 and 126,647.15

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Solution

The fourth proportional to 228,628.58, 315,492.17 and 126,647.15 is: 174,764.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,628.58 : 315,492.17 = 126,647.15 : x
  2. Step 2: Convert to fraction form
    228,628.58/315,492.17 = 126,647.15/x
  3. Step 3: Cross multiply
    228,628.58x = 315,492.17 × 126,647.15
  4. Step 4: Simplify right side
    228,628.58x = 39,956,181,967.12
  5. Step 5: Solve for x
    x = 39,956,181,967.12/228,628.58
  6. Step 6: Final answer
    x = 174,764.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.