Home / 268,989.23-403,389.54-79,399.01

Finding the Fourth Proportional to 268,989.23, 403,389.54 and 79,399.01

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Solution

The fourth proportional to 268,989.23, 403,389.54 and 79,399.01 is: 119,070.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,989.23 : 403,389.54 = 79,399.01 : x
  2. Step 2: Convert to fraction form
    268,989.23/403,389.54 = 79,399.01/x
  3. Step 3: Cross multiply
    268,989.23x = 403,389.54 × 79,399.01
  4. Step 4: Simplify right side
    268,989.23x = 32,028,728,103.41
  5. Step 5: Solve for x
    x = 32,028,728,103.41/268,989.23
  6. Step 6: Final answer
    x = 119,070.67

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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.