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Finding the Fourth Proportional to 380,508.21, 525,100.01 and 219,362.49

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Solution

The fourth proportional to 380,508.21, 525,100.01 and 219,362.49 is: 302,719.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,508.21 : 525,100.01 = 219,362.49 : x
  2. Step 2: Convert to fraction form
    380,508.21/525,100.01 = 219,362.49/x
  3. Step 3: Cross multiply
    380,508.21x = 525,100.01 × 219,362.49
  4. Step 4: Simplify right side
    380,508.21x = 115,187,245,692.63
  5. Step 5: Solve for x
    x = 115,187,245,692.63/380,508.21
  6. Step 6: Final answer
    x = 302,719.48

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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.