Home / 405,348.07-559,380.46-221,587.45

Finding the Fourth Proportional to 405,348.07, 559,380.46 and 221,587.45

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Solution

The fourth proportional to 405,348.07, 559,380.46 and 221,587.45 is: 305,790.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,348.07 : 559,380.46 = 221,587.45 : x
  2. Step 2: Convert to fraction form
    405,348.07/559,380.46 = 221,587.45/x
  3. Step 3: Cross multiply
    405,348.07x = 559,380.46 × 221,587.45
  4. Step 4: Simplify right side
    405,348.07x = 123,951,686,914.33
  5. Step 5: Solve for x
    x = 123,951,686,914.33/405,348.07
  6. Step 6: Final answer
    x = 305,790.74

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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.