Home / 290,865.90-436,298.04-91,187.13

Finding the Fourth Proportional to 290,865.90, 436,298.04 and 91,187.13

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Solution

The fourth proportional to 290,865.90, 436,298.04 and 91,187.13 is: 136,780.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,865.90 : 436,298.04 = 91,187.13 : x
  2. Step 2: Convert to fraction form
    290,865.90/436,298.04 = 91,187.13/x
  3. Step 3: Cross multiply
    290,865.90x = 436,298.04 × 91,187.13
  4. Step 4: Simplify right side
    290,865.90x = 39,784,766,092.23
  5. Step 5: Solve for x
    x = 39,784,766,092.23/290,865.90
  6. Step 6: Final answer
    x = 136,780.44

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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.