Home / 353,456.64-487,609.44-210,135.36

Finding the Fourth Proportional to 353,456.64, 487,609.44 and 210,135.36

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Solution

The fourth proportional to 353,456.64, 487,609.44 and 210,135.36 is: 289,891.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,456.64 : 487,609.44 = 210,135.36 : x
  2. Step 2: Convert to fraction form
    353,456.64/487,609.44 = 210,135.36/x
  3. Step 3: Cross multiply
    353,456.64x = 487,609.44 × 210,135.36
  4. Step 4: Simplify right side
    353,456.64x = 102,463,985,213.80
  5. Step 5: Solve for x
    x = 102,463,985,213.80/353,456.64
  6. Step 6: Final answer
    x = 289,891.24

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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.