Home / 216,564.24-324,881.40-66,769.50

Finding the Fourth Proportional to 216,564.24, 324,881.40 and 66,769.50

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Solution

The fourth proportional to 216,564.24, 324,881.40 and 66,769.50 is: 100,165.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,564.24 : 324,881.40 = 66,769.50 : x
  2. Step 2: Convert to fraction form
    216,564.24/324,881.40 = 66,769.50/x
  3. Step 3: Cross multiply
    216,564.24x = 324,881.40 × 66,769.50
  4. Step 4: Simplify right side
    216,564.24x = 21,692,168,637.30
  5. Step 5: Solve for x
    x = 21,692,168,637.30/216,564.24
  6. Step 6: Final answer
    x = 100,165.05

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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.