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Finding the Fourth Proportional to 245,318.32, 338,570.58 and 149,804.92

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Solution

The fourth proportional to 245,318.32, 338,570.58 and 149,804.92 is: 206,749.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,318.32 : 338,570.58 = 149,804.92 : x
  2. Step 2: Convert to fraction form
    245,318.32/338,570.58 = 149,804.92/x
  3. Step 3: Cross multiply
    245,318.32x = 338,570.58 × 149,804.92
  4. Step 4: Simplify right side
    245,318.32x = 50,719,538,651.25
  5. Step 5: Solve for x
    x = 50,719,538,651.25/245,318.32
  6. Step 6: Final answer
    x = 206,749.90

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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.