Home / 389,123.02-537,073.26-245,791.90

Finding the Fourth Proportional to 389,123.02, 537,073.26 and 245,791.90

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Solution

The fourth proportional to 389,123.02, 537,073.26 and 245,791.90 is: 339,245.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,123.02 : 537,073.26 = 245,791.90 : x
  2. Step 2: Convert to fraction form
    389,123.02/537,073.26 = 245,791.90/x
  3. Step 3: Cross multiply
    389,123.02x = 537,073.26 × 245,791.90
  4. Step 4: Simplify right side
    389,123.02x = 132,008,257,014.59
  5. Step 5: Solve for x
    x = 132,008,257,014.59/389,123.02
  6. Step 6: Final answer
    x = 339,245.56

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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.