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Finding the Fourth Proportional to 315,454.90, 435,352.61 and 179,494.58

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Solution

The fourth proportional to 315,454.90, 435,352.61 and 179,494.58 is: 247,716.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,454.90 : 435,352.61 = 179,494.58 : x
  2. Step 2: Convert to fraction form
    315,454.90/435,352.61 = 179,494.58/x
  3. Step 3: Cross multiply
    315,454.90x = 435,352.61 × 179,494.58
  4. Step 4: Simplify right side
    315,454.90x = 78,143,430,809.62
  5. Step 5: Solve for x
    x = 78,143,430,809.62/315,454.90
  6. Step 6: Final answer
    x = 247,716.65

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Why These Related Problems?

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