Home / 253,629.18-380,450.75-76,136.24

Finding the Fourth Proportional to 253,629.18, 380,450.75 and 76,136.24

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Solution

The fourth proportional to 253,629.18, 380,450.75 and 76,136.24 is: 114,206.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,629.18 : 380,450.75 = 76,136.24 : x
  2. Step 2: Convert to fraction form
    253,629.18/380,450.75 = 76,136.24/x
  3. Step 3: Cross multiply
    253,629.18x = 380,450.75 × 76,136.24
  4. Step 4: Simplify right side
    253,629.18x = 28,966,087,327.25
  5. Step 5: Solve for x
    x = 28,966,087,327.25/253,629.18
  6. Step 6: Final answer
    x = 114,206.45

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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.