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Finding the Fourth Proportional to 340,908.63, 511,436.75 and 130,546.57

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Solution

The fourth proportional to 340,908.63, 511,436.75 and 130,546.57 is: 195,848.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,908.63 : 511,436.75 = 130,546.57 : x
  2. Step 2: Convert to fraction form
    340,908.63/511,436.75 = 130,546.57/x
  3. Step 3: Cross multiply
    340,908.63x = 511,436.75 × 130,546.57
  4. Step 4: Simplify right side
    340,908.63x = 66,766,313,484.45
  5. Step 5: Solve for x
    x = 66,766,313,484.45/340,908.63
  6. Step 6: Final answer
    x = 195,848.12

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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.