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Finding the Fourth Proportional to 353,028.60, 528,246.90 and 259,716.60

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Solution

The fourth proportional to 353,028.60, 528,246.90 and 259,716.60 is: 388,621.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,028.60 : 528,246.90 = 259,716.60 : x
  2. Step 2: Convert to fraction form
    353,028.60/528,246.90 = 259,716.60/x
  3. Step 3: Cross multiply
    353,028.60x = 528,246.90 × 259,716.60
  4. Step 4: Simplify right side
    353,028.60x = 137,194,488,828.54
  5. Step 5: Solve for x
    x = 137,194,488,828.54/353,028.60
  6. Step 6: Final answer
    x = 388,621.46

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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.