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Finding the Fourth Proportional to 247,308.79, 340,908.73 and 151,638.07

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Solution

The fourth proportional to 247,308.79, 340,908.73 and 151,638.07 is: 209,029.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,308.79 : 340,908.73 = 151,638.07 : x
  2. Step 2: Convert to fraction form
    247,308.79/340,908.73 = 151,638.07/x
  3. Step 3: Cross multiply
    247,308.79x = 340,908.73 × 151,638.07
  4. Step 4: Simplify right side
    247,308.79x = 51,694,741,863.35
  5. Step 5: Solve for x
    x = 51,694,741,863.35/247,308.79
  6. Step 6: Final answer
    x = 209,029.13

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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.