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Finding the Fourth Proportional to 340,876.76, 511,315.13 and 104,219.43

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Solution

The fourth proportional to 340,876.76, 511,315.13 and 104,219.43 is: 156,329.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,876.76 : 511,315.13 = 104,219.43 : x
  2. Step 2: Convert to fraction form
    340,876.76/511,315.13 = 104,219.43/x
  3. Step 3: Cross multiply
    340,876.76x = 511,315.13 × 104,219.43
  4. Step 4: Simplify right side
    340,876.76x = 53,288,974,056.31
  5. Step 5: Solve for x
    x = 53,288,974,056.31/340,876.76
  6. Step 6: Final answer
    x = 156,329.15

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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.