Home / 290,990.24-436,561.32-91,316.96

Finding the Fourth Proportional to 290,990.24, 436,561.32 and 91,316.96

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Solution

The fourth proportional to 290,990.24, 436,561.32 and 91,316.96 is: 136,999.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,990.24 : 436,561.32 = 91,316.96 : x
  2. Step 2: Convert to fraction form
    290,990.24/436,561.32 = 91,316.96/x
  3. Step 3: Cross multiply
    290,990.24x = 436,561.32 × 91,316.96
  4. Step 4: Simplify right side
    290,990.24x = 39,865,452,595.99
  5. Step 5: Solve for x
    x = 39,865,452,595.99/290,990.24
  6. Step 6: Final answer
    x = 136,999.28

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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.