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Finding the Fourth Proportional to 305,628, 458,626.32 and 130,524

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Solution

The fourth proportional to 305,628, 458,626.32 and 130,524 is: 195,864.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,628 : 458,626.32 = 130,524 : x
  2. Step 2: Convert to fraction form
    305,628/458,626.32 = 130,524/x
  3. Step 3: Cross multiply
    305,628x = 458,626.32 × 130,524
  4. Step 4: Simplify right side
    305,628x = 59,861,741,791.68
  5. Step 5: Solve for x
    x = 59,861,741,791.68/305,628
  6. Step 6: Final answer
    x = 195,864.72

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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.