Home / 290,853.39-436,280.21-91,189.34

Finding the Fourth Proportional to 290,853.39, 436,280.21 and 91,189.34

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Solution

The fourth proportional to 290,853.39, 436,280.21 and 91,189.34 is: 136,784.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,853.39 : 436,280.21 = 91,189.34 : x
  2. Step 2: Convert to fraction form
    290,853.39/436,280.21 = 91,189.34/x
  3. Step 3: Cross multiply
    290,853.39x = 436,280.21 × 91,189.34
  4. Step 4: Simplify right side
    290,853.39x = 39,784,106,584.41
  5. Step 5: Solve for x
    x = 39,784,106,584.41/290,853.39
  6. Step 6: Final answer
    x = 136,784.06

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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.