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Finding the Fourth Proportional to 228,505.71, 315,939.84 and 200,130.06

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Solution

The fourth proportional to 228,505.71, 315,939.84 and 200,130.06 is: 276,706.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,505.71 : 315,939.84 = 200,130.06 : x
  2. Step 2: Convert to fraction form
    228,505.71/315,939.84 = 200,130.06/x
  3. Step 3: Cross multiply
    228,505.71x = 315,939.84 × 200,130.06
  4. Step 4: Simplify right side
    228,505.71x = 63,229,059,135.59
  5. Step 5: Solve for x
    x = 63,229,059,135.59/228,505.71
  6. Step 6: Final answer
    x = 276,706.69

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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.