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Finding the Fourth Proportional to 340,696.40, 511,143.24 and 140,979.92

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Solution

The fourth proportional to 340,696.40, 511,143.24 and 140,979.92 is: 211,510.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,696.40 : 511,143.24 = 140,979.92 : x
  2. Step 2: Convert to fraction form
    340,696.40/511,143.24 = 140,979.92/x
  3. Step 3: Cross multiply
    340,696.40x = 511,143.24 × 140,979.92
  4. Step 4: Simplify right side
    340,696.40x = 72,060,933,083.74
  5. Step 5: Solve for x
    x = 72,060,933,083.74/340,696.40
  6. Step 6: Final answer
    x = 211,510.70

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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.