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Finding the Fourth Proportional to 290,318.52, 400,633.65 and 162,994.08

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Solution

The fourth proportional to 290,318.52, 400,633.65 and 162,994.08 is: 224,928.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,318.52 : 400,633.65 = 162,994.08 : x
  2. Step 2: Convert to fraction form
    290,318.52/400,633.65 = 162,994.08/x
  3. Step 3: Cross multiply
    290,318.52x = 400,633.65 × 162,994.08
  4. Step 4: Simplify right side
    290,318.52x = 65,300,913,198.79
  5. Step 5: Solve for x
    x = 65,300,913,198.79/290,318.52
  6. Step 6: Final answer
    x = 224,928.51

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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.