Home / 290,985.83-436,497.20-91,314.09

Finding the Fourth Proportional to 290,985.83, 436,497.20 and 91,314.09

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Solution

The fourth proportional to 290,985.83, 436,497.20 and 91,314.09 is: 136,976.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,985.83 : 436,497.20 = 91,314.09 : x
  2. Step 2: Convert to fraction form
    290,985.83/436,497.20 = 91,314.09/x
  3. Step 3: Cross multiply
    290,985.83x = 436,497.20 × 91,314.09
  4. Step 4: Simplify right side
    290,985.83x = 39,858,344,148.98
  5. Step 5: Solve for x
    x = 39,858,344,148.98/290,985.83
  6. Step 6: Final answer
    x = 136,976.93

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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.