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Finding the Fourth Proportional to 245,322.15, 338,494.93 and 143,327.91

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Solution

The fourth proportional to 245,322.15, 338,494.93 and 143,327.91 is: 197,763.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,322.15 : 338,494.93 = 143,327.91 : x
  2. Step 2: Convert to fraction form
    245,322.15/338,494.93 = 143,327.91/x
  3. Step 3: Cross multiply
    245,322.15x = 338,494.93 × 143,327.91
  4. Step 4: Simplify right side
    245,322.15x = 48,515,770,183.63
  5. Step 5: Solve for x
    x = 48,515,770,183.63/245,322.15
  6. Step 6: Final answer
    x = 197,763.51

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1.5x scale

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.