Home / 389,919.17-538,077.94-213,102.60

Finding the Fourth Proportional to 389,919.17, 538,077.94 and 213,102.60

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Solution

The fourth proportional to 389,919.17, 538,077.94 and 213,102.60 is: 294,075.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,919.17 : 538,077.94 = 213,102.60 : x
  2. Step 2: Convert to fraction form
    389,919.17/538,077.94 = 213,102.60/x
  3. Step 3: Cross multiply
    389,919.17x = 538,077.94 × 213,102.60
  4. Step 4: Simplify right side
    389,919.17x = 114,665,805,466.10
  5. Step 5: Solve for x
    x = 114,665,805,466.10/389,919.17
  6. Step 6: Final answer
    x = 294,075.84

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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.