Home / 290,348.28-435,522.42-79,986.24

Finding the Fourth Proportional to 290,348.28, 435,522.42 and 79,986.24

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Solution

The fourth proportional to 290,348.28, 435,522.42 and 79,986.24 is: 119,979.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,348.28 : 435,522.42 = 79,986.24 : x
  2. Step 2: Convert to fraction form
    290,348.28/435,522.42 = 79,986.24/x
  3. Step 3: Cross multiply
    290,348.28x = 435,522.42 × 79,986.24
  4. Step 4: Simplify right side
    290,348.28x = 34,835,800,811.50
  5. Step 5: Solve for x
    x = 34,835,800,811.50/290,348.28
  6. Step 6: Final answer
    x = 119,979.36

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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.