Home / 405,008.14-558,905.41-221,244.48

Finding the Fourth Proportional to 405,008.14, 558,905.41 and 221,244.48

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Solution

The fourth proportional to 405,008.14, 558,905.41 and 221,244.48 is: 305,314.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,008.14 : 558,905.41 = 221,244.48 : x
  2. Step 2: Convert to fraction form
    405,008.14/558,905.41 = 221,244.48/x
  3. Step 3: Cross multiply
    405,008.14x = 558,905.41 × 221,244.48
  4. Step 4: Simplify right side
    405,008.14x = 123,654,736,804.64
  5. Step 5: Solve for x
    x = 123,654,736,804.64/405,008.14
  6. Step 6: Final answer
    x = 305,314.20

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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.