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Finding the Fourth Proportional to 340,043.55, 510,093.89 and 103,388.28

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Solution

The fourth proportional to 340,043.55, 510,093.89 and 103,388.28 is: 155,091.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,043.55 : 510,093.89 = 103,388.28 : x
  2. Step 2: Convert to fraction form
    340,043.55/510,093.89 = 103,388.28/x
  3. Step 3: Cross multiply
    340,043.55x = 510,093.89 × 103,388.28
  4. Step 4: Simplify right side
    340,043.55x = 52,737,729,408.67
  5. Step 5: Solve for x
    x = 52,737,729,408.67/340,043.55
  6. Step 6: Final answer
    x = 155,091.10

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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.