Home / 389,960.82-538,120.14-226,602.84

Finding the Fourth Proportional to 389,960.82, 538,120.14 and 226,602.84

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Solution

The fourth proportional to 389,960.82, 538,120.14 and 226,602.84 is: 312,696.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,960.82 : 538,120.14 = 226,602.84 : x
  2. Step 2: Convert to fraction form
    389,960.82/538,120.14 = 226,602.84/x
  3. Step 3: Cross multiply
    389,960.82x = 538,120.14 × 226,602.84
  4. Step 4: Simplify right side
    389,960.82x = 121,939,551,985.20
  5. Step 5: Solve for x
    x = 121,939,551,985.20/389,960.82
  6. Step 6: Final answer
    x = 312,696.93

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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.