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Finding the Fourth Proportional to 216,751.30, 325,220.36 and 90,416.41

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Solution

The fourth proportional to 216,751.30, 325,220.36 and 90,416.41 is: 135,663.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,751.30 : 325,220.36 = 90,416.41 : x
  2. Step 2: Convert to fraction form
    216,751.30/325,220.36 = 90,416.41/x
  3. Step 3: Cross multiply
    216,751.30x = 325,220.36 × 90,416.41
  4. Step 4: Simplify right side
    216,751.30x = 29,405,256,144.97
  5. Step 5: Solve for x
    x = 29,405,256,144.97/216,751.30
  6. Step 6: Final answer
    x = 135,663.58

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1.5x scale

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.