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Finding the Fourth Proportional to 228,374.92, 315,143.59 and 126,394.20

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Solution

The fourth proportional to 228,374.92, 315,143.59 and 126,394.20 is: 174,416.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,374.92 : 315,143.59 = 126,394.20 : x
  2. Step 2: Convert to fraction form
    228,374.92/315,143.59 = 126,394.20/x
  3. Step 3: Cross multiply
    228,374.92x = 315,143.59 × 126,394.20
  4. Step 4: Simplify right side
    228,374.92x = 39,832,321,943.18
  5. Step 5: Solve for x
    x = 39,832,321,943.18/228,374.92
  6. Step 6: Final answer
    x = 174,416.36

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1.5x scale

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.