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Finding the Fourth Proportional to 201,680.20, 301,864.20 and 157,065.40

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Solution

The fourth proportional to 201,680.20, 301,864.20 and 157,065.40 is: 235,087.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,680.20 : 301,864.20 = 157,065.40 : x
  2. Step 2: Convert to fraction form
    201,680.20/301,864.20 = 157,065.40/x
  3. Step 3: Cross multiply
    201,680.20x = 301,864.20 × 157,065.40
  4. Step 4: Simplify right side
    201,680.20x = 47,412,421,318.68
  5. Step 5: Solve for x
    x = 47,412,421,318.68/201,680.20
  6. Step 6: Final answer
    x = 235,087.14

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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.