Home / 438,620.13-657,953.73-139,123.44

Finding the Fourth Proportional to 438,620.13, 657,953.73 and 139,123.44

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Solution

The fourth proportional to 438,620.13, 657,953.73 and 139,123.44 is: 208,692.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,620.13 : 657,953.73 = 139,123.44 : x
  2. Step 2: Convert to fraction form
    438,620.13/657,953.73 = 139,123.44/x
  3. Step 3: Cross multiply
    438,620.13x = 657,953.73 × 139,123.44
  4. Step 4: Simplify right side
    438,620.13x = 91,536,786,278.43
  5. Step 5: Solve for x
    x = 91,536,786,278.43/438,620.13
  6. Step 6: Final answer
    x = 208,692.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.