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Finding the Fourth Proportional to 245,291.81, 338,475.59 and 147,169.83

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Solution

The fourth proportional to 245,291.81, 338,475.59 and 147,169.83 is: 203,078.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,291.81 : 338,475.59 = 147,169.83 : x
  2. Step 2: Convert to fraction form
    245,291.81/338,475.59 = 147,169.83/x
  3. Step 3: Cross multiply
    245,291.81x = 338,475.59 × 147,169.83
  4. Step 4: Simplify right side
    245,291.81x = 49,813,394,303.60
  5. Step 5: Solve for x
    x = 49,813,394,303.60/245,291.81
  6. Step 6: Final answer
    x = 203,078.10

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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.