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Finding the Fourth Proportional to 228,542.49, 315,389.51 and 126,565.71

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Solution

The fourth proportional to 228,542.49, 315,389.51 and 126,565.71 is: 174,661.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,542.49 : 315,389.51 = 126,565.71 : x
  2. Step 2: Convert to fraction form
    228,542.49/315,389.51 = 126,565.71/x
  3. Step 3: Cross multiply
    228,542.49x = 315,389.51 × 126,565.71
  4. Step 4: Simplify right side
    228,542.49x = 39,917,497,259.70
  5. Step 5: Solve for x
    x = 39,917,497,259.70/228,542.49
  6. Step 6: Final answer
    x = 174,661.16

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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.