Home / 407,005.44-561,678.96-245,889.36

Finding the Fourth Proportional to 407,005.44, 561,678.96 and 245,889.36

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Solution

The fourth proportional to 407,005.44, 561,678.96 and 245,889.36 is: 339,334.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,005.44 : 561,678.96 = 245,889.36 : x
  2. Step 2: Convert to fraction form
    407,005.44/561,678.96 = 245,889.36/x
  3. Step 3: Cross multiply
    407,005.44x = 561,678.96 × 245,889.36
  4. Step 4: Simplify right side
    407,005.44x = 138,110,879,999.87
  5. Step 5: Solve for x
    x = 138,110,879,999.87/407,005.44
  6. Step 6: Final answer
    x = 339,334.24

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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.