Home / 389,943.54-538,123.44-211,095.54

Finding the Fourth Proportional to 389,943.54, 538,123.44 and 211,095.54

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Solution

The fourth proportional to 389,943.54, 538,123.44 and 211,095.54 is: 291,312.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,943.54 : 538,123.44 = 211,095.54 : x
  2. Step 2: Convert to fraction form
    389,943.54/538,123.44 = 211,095.54/x
  3. Step 3: Cross multiply
    389,943.54x = 538,123.44 × 211,095.54
  4. Step 4: Simplify right side
    389,943.54x = 113,595,458,153.46
  5. Step 5: Solve for x
    x = 113,595,458,153.46/389,943.54
  6. Step 6: Final answer
    x = 291,312.58

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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.