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Finding the Fourth Proportional to 340,910.63, 511,439.76 and 130,548.57

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Solution

The fourth proportional to 340,910.63, 511,439.76 and 130,548.57 is: 195,851.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,910.63 : 511,439.76 = 130,548.57 : x
  2. Step 2: Convert to fraction form
    340,910.63/511,439.76 = 130,548.57/x
  3. Step 3: Cross multiply
    340,910.63x = 511,439.76 × 130,548.57
  4. Step 4: Simplify right side
    340,910.63x = 66,767,729,309.14
  5. Step 5: Solve for x
    x = 66,767,729,309.14/340,910.63
  6. Step 6: Final answer
    x = 195,851.12

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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.