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Finding the Fourth Proportional to 354,352.36, 488,608.98 and 289,620.68

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Solution

The fourth proportional to 354,352.36, 488,608.98 and 289,620.68 is: 399,351.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,352.36 : 488,608.98 = 289,620.68 : x
  2. Step 2: Convert to fraction form
    354,352.36/488,608.98 = 289,620.68/x
  3. Step 3: Cross multiply
    354,352.36x = 488,608.98 × 289,620.68
  4. Step 4: Simplify right side
    354,352.36x = 141,511,265,041.71
  5. Step 5: Solve for x
    x = 141,511,265,041.71/354,352.36
  6. Step 6: Final answer
    x = 399,351.83

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.