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Finding the Fourth Proportional to 228,480.16, 315,312.47 and 126,505.61

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Solution

The fourth proportional to 228,480.16, 315,312.47 and 126,505.61 is: 174,583.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,480.16 : 315,312.47 = 126,505.61 : x
  2. Step 2: Convert to fraction form
    228,480.16/315,312.47 = 126,505.61/x
  3. Step 3: Cross multiply
    228,480.16x = 315,312.47 × 126,505.61
  4. Step 4: Simplify right side
    228,480.16x = 39,888,796,604.89
  5. Step 5: Solve for x
    x = 39,888,796,604.89/228,480.16
  6. Step 6: Final answer
    x = 174,583.20

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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.