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Finding the Fourth Proportional to 380,604.42, 525,290.04 and 219,427.98

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Solution

The fourth proportional to 380,604.42, 525,290.04 and 219,427.98 is: 302,842.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,604.42 : 525,290.04 = 219,427.98 : x
  2. Step 2: Convert to fraction form
    380,604.42/525,290.04 = 219,427.98/x
  3. Step 3: Cross multiply
    380,604.42x = 525,290.04 × 219,427.98
  4. Step 4: Simplify right side
    380,604.42x = 115,263,332,391.32
  5. Step 5: Solve for x
    x = 115,263,332,391.32/380,604.42
  6. Step 6: Final answer
    x = 302,842.86

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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.