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Finding the Fourth Proportional to 340,278.14, 510,493.15 and 103,639.07

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Solution

The fourth proportional to 340,278.14, 510,493.15 and 103,639.07 is: 155,481.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,278.14 : 510,493.15 = 103,639.07 : x
  2. Step 2: Convert to fraction form
    340,278.14/510,493.15 = 103,639.07/x
  3. Step 3: Cross multiply
    340,278.14x = 510,493.15 × 103,639.07
  4. Step 4: Simplify right side
    340,278.14x = 52,907,035,307.37
  5. Step 5: Solve for x
    x = 52,907,035,307.37/340,278.14
  6. Step 6: Final answer
    x = 155,481.73

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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.