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Finding the Fourth Proportional to 201,038.40, 301,120.20 and 161,672.40

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Solution

The fourth proportional to 201,038.40, 301,120.20 and 161,672.40 is: 242,156.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,038.40 : 301,120.20 = 161,672.40 : x
  2. Step 2: Convert to fraction form
    201,038.40/301,120.20 = 161,672.40/x
  3. Step 3: Cross multiply
    201,038.40x = 301,120.20 × 161,672.40
  4. Step 4: Simplify right side
    201,038.40x = 48,682,825,422.48
  5. Step 5: Solve for x
    x = 48,682,825,422.48/201,038.40
  6. Step 6: Final answer
    x = 242,156.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.