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Finding the Fourth Proportional to 228,635.65, 315,513.79 and 126,660.90

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Solution

The fourth proportional to 228,635.65, 315,513.79 and 126,660.90 is: 174,790.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,635.65 : 315,513.79 = 126,660.90 : x
  2. Step 2: Convert to fraction form
    228,635.65/315,513.79 = 126,660.90/x
  3. Step 3: Cross multiply
    228,635.65x = 315,513.79 × 126,660.90
  4. Step 4: Simplify right side
    228,635.65x = 39,963,260,603.81
  5. Step 5: Solve for x
    x = 39,963,260,603.81/228,635.65
  6. Step 6: Final answer
    x = 174,790.15

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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.