Home / 221,282.10-305,396.73-135,223.38

Finding the Fourth Proportional to 221,282.10, 305,396.73 and 135,223.38

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Solution

The fourth proportional to 221,282.10, 305,396.73 and 135,223.38 is: 186,625.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,282.10 : 305,396.73 = 135,223.38 : x
  2. Step 2: Convert to fraction form
    221,282.10/305,396.73 = 135,223.38/x
  3. Step 3: Cross multiply
    221,282.10x = 305,396.73 × 135,223.38
  4. Step 4: Simplify right side
    221,282.10x = 41,296,778,071.55
  5. Step 5: Solve for x
    x = 41,296,778,071.55/221,282.10
  6. Step 6: Final answer
    x = 186,625.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.