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Finding the Fourth Proportional to 290,815.04, 401,160.84 and 169,930.64

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Solution

The fourth proportional to 290,815.04, 401,160.84 and 169,930.64 is: 234,408.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,815.04 : 401,160.84 = 169,930.64 : x
  2. Step 2: Convert to fraction form
    290,815.04/401,160.84 = 169,930.64/x
  3. Step 3: Cross multiply
    290,815.04x = 401,160.84 × 169,930.64
  4. Step 4: Simplify right side
    290,815.04x = 68,169,518,284.14
  5. Step 5: Solve for x
    x = 68,169,518,284.14/290,815.04
  6. Step 6: Final answer
    x = 234,408.50

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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.