Home / 380,865.36-525,611.40-217,536.12

Finding the Fourth Proportional to 380,865.36, 525,611.40 and 217,536.12

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Solution

The fourth proportional to 380,865.36, 525,611.40 and 217,536.12 is: 300,209.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,865.36 : 525,611.40 = 217,536.12 : x
  2. Step 2: Convert to fraction form
    380,865.36/525,611.40 = 217,536.12/x
  3. Step 3: Cross multiply
    380,865.36x = 525,611.40 × 217,536.12
  4. Step 4: Simplify right side
    380,865.36x = 114,339,464,583.77
  5. Step 5: Solve for x
    x = 114,339,464,583.77/380,865.36
  6. Step 6: Final answer
    x = 300,209.67

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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.