Home / 290,986.55-436,498.26-91,314.81

Finding the Fourth Proportional to 290,986.55, 436,498.26 and 91,314.81

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Solution

The fourth proportional to 290,986.55, 436,498.26 and 91,314.81 is: 136,978.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,986.55 : 436,498.26 = 91,314.81 : x
  2. Step 2: Convert to fraction form
    290,986.55/436,498.26 = 91,314.81/x
  3. Step 3: Cross multiply
    290,986.55x = 436,498.26 × 91,314.81
  4. Step 4: Simplify right side
    290,986.55x = 39,858,755,677.23
  5. Step 5: Solve for x
    x = 39,858,755,677.23/290,986.55
  6. Step 6: Final answer
    x = 136,978.00

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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.