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Finding the Fourth Proportional to 428,976.72, 592,015.91 and 247,696.29

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Solution

The fourth proportional to 428,976.72, 592,015.91 and 247,696.29 is: 341,837.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,976.72 : 592,015.91 = 247,696.29 : x
  2. Step 2: Convert to fraction form
    428,976.72/592,015.91 = 247,696.29/x
  3. Step 3: Cross multiply
    428,976.72x = 592,015.91 × 247,696.29
  4. Step 4: Simplify right side
    428,976.72x = 146,640,144,527.97
  5. Step 5: Solve for x
    x = 146,640,144,527.97/428,976.72
  6. Step 6: Final answer
    x = 341,837.07

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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.