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Finding the Fourth Proportional to 201,288.01, 277,803.74 and 129,875.78

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Solution

The fourth proportional to 201,288.01, 277,803.74 and 129,875.78 is: 179,245.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,288.01 : 277,803.74 = 129,875.78 : x
  2. Step 2: Convert to fraction form
    201,288.01/277,803.74 = 129,875.78/x
  3. Step 3: Cross multiply
    201,288.01x = 277,803.74 × 129,875.78
  4. Step 4: Simplify right side
    201,288.01x = 36,079,977,419.42
  5. Step 5: Solve for x
    x = 36,079,977,419.42/201,288.01
  6. Step 6: Final answer
    x = 179,245.54

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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.