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Finding the Fourth Proportional to 340,297.78, 510,520.59 and 103,634.38

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Solution

The fourth proportional to 340,297.78, 510,520.59 and 103,634.38 is: 155,474.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,297.78 : 510,520.59 = 103,634.38 : x
  2. Step 2: Convert to fraction form
    340,297.78/510,520.59 = 103,634.38/x
  3. Step 3: Cross multiply
    340,297.78x = 510,520.59 × 103,634.38
  4. Step 4: Simplify right side
    340,297.78x = 52,907,484,821.88
  5. Step 5: Solve for x
    x = 52,907,484,821.88/340,297.78
  6. Step 6: Final answer
    x = 155,474.08

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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.