Home / 272,904.36-409,739.10-139,880.04

Finding the Fourth Proportional to 272,904.36, 409,739.10 and 139,880.04

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Solution

The fourth proportional to 272,904.36, 409,739.10 and 139,880.04 is: 210,016.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,904.36 : 409,739.10 = 139,880.04 : x
  2. Step 2: Convert to fraction form
    272,904.36/409,739.10 = 139,880.04/x
  3. Step 3: Cross multiply
    272,904.36x = 409,739.10 × 139,880.04
  4. Step 4: Simplify right side
    272,904.36x = 57,314,321,697.56
  5. Step 5: Solve for x
    x = 57,314,321,697.56/272,904.36
  6. Step 6: Final answer
    x = 210,016.15

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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.