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Finding the Fourth Proportional to 290,017.72, 400,272.55 and 169,159

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Solution

The fourth proportional to 290,017.72, 400,272.55 and 169,159 is: 233,467.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,017.72 : 400,272.55 = 169,159 : x
  2. Step 2: Convert to fraction form
    290,017.72/400,272.55 = 169,159/x
  3. Step 3: Cross multiply
    290,017.72x = 400,272.55 × 169,159
  4. Step 4: Simplify right side
    290,017.72x = 67,709,704,285.45
  5. Step 5: Solve for x
    x = 67,709,704,285.45/290,017.72
  6. Step 6: Final answer
    x = 233,467.48

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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.