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Finding the Fourth Proportional to 201,079.11, 277,419.71 and 128,524.42

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Solution

The fourth proportional to 201,079.11, 277,419.71 and 128,524.42 is: 177,319.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,079.11 : 277,419.71 = 128,524.42 : x
  2. Step 2: Convert to fraction form
    201,079.11/277,419.71 = 128,524.42/x
  3. Step 3: Cross multiply
    201,079.11x = 277,419.71 × 128,524.42
  4. Step 4: Simplify right side
    201,079.11x = 35,655,207,630.93
  5. Step 5: Solve for x
    x = 35,655,207,630.93/201,079.11
  6. Step 6: Final answer
    x = 177,319.30

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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.