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Finding the Fourth Proportional to 201,217.40, 301,826.10 and 154,561.40

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Solution

The fourth proportional to 201,217.40, 301,826.10 and 154,561.40 is: 231,842.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,217.40 : 301,826.10 = 154,561.40 : x
  2. Step 2: Convert to fraction form
    201,217.40/301,826.10 = 154,561.40/x
  3. Step 3: Cross multiply
    201,217.40x = 301,826.10 × 154,561.40
  4. Step 4: Simplify right side
    201,217.40x = 46,650,664,572.54
  5. Step 5: Solve for x
    x = 46,650,664,572.54/201,217.40
  6. Step 6: Final answer
    x = 231,842.10

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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.