Home / 386,461.30-533,321.85-289,493.37

Finding the Fourth Proportional to 386,461.30, 533,321.85 and 289,493.37

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Solution

The fourth proportional to 386,461.30, 533,321.85 and 289,493.37 is: 399,504.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,461.30 : 533,321.85 = 289,493.37 : x
  2. Step 2: Convert to fraction form
    386,461.30/533,321.85 = 289,493.37/x
  3. Step 3: Cross multiply
    386,461.30x = 533,321.85 × 289,493.37
  4. Step 4: Simplify right side
    386,461.30x = 154,393,139,651.14
  5. Step 5: Solve for x
    x = 154,393,139,651.14/386,461.30
  6. Step 6: Final answer
    x = 399,504.79

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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.