Home / 290,650.23-435,740.09-90,867.78

Finding the Fourth Proportional to 290,650.23, 435,740.09 and 90,867.78

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Solution

The fourth proportional to 290,650.23, 435,740.09 and 90,867.78 is: 136,228.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,650.23 : 435,740.09 = 90,867.78 : x
  2. Step 2: Convert to fraction form
    290,650.23/435,740.09 = 90,867.78/x
  3. Step 3: Cross multiply
    290,650.23x = 435,740.09 × 90,867.78
  4. Step 4: Simplify right side
    290,650.23x = 39,594,734,180.96
  5. Step 5: Solve for x
    x = 39,594,734,180.96/290,650.23
  6. Step 6: Final answer
    x = 136,228.12

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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.