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Finding the Fourth Proportional to 290,952.81, 436,429.22 and 80,590.82

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Solution

The fourth proportional to 290,952.81, 436,429.22 and 80,590.82 is: 120,886.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,952.81 : 436,429.22 = 80,590.82 : x
  2. Step 2: Convert to fraction form
    290,952.81/436,429.22 = 80,590.82/x
  3. Step 3: Cross multiply
    290,952.81x = 436,429.22 × 80,590.82
  4. Step 4: Simplify right side
    290,952.81x = 35,172,186,126.66
  5. Step 5: Solve for x
    x = 35,172,186,126.66/290,952.81
  6. Step 6: Final answer
    x = 120,886.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.