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Finding the Fourth Proportional to 216,967.89, 325,503.44 and 90,537.88

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Solution

The fourth proportional to 216,967.89, 325,503.44 and 90,537.88 is: 135,828.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,967.89 : 325,503.44 = 90,537.88 : x
  2. Step 2: Convert to fraction form
    216,967.89/325,503.44 = 90,537.88/x
  3. Step 3: Cross multiply
    216,967.89x = 325,503.44 × 90,537.88
  4. Step 4: Simplify right side
    216,967.89x = 29,470,389,903.58
  5. Step 5: Solve for x
    x = 29,470,389,903.58/216,967.89
  6. Step 6: Final answer
    x = 135,828.35

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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.