Home / 405,855.37-559,991.53-242,487.36

Finding the Fourth Proportional to 405,855.37, 559,991.53 and 242,487.36

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Solution

The fourth proportional to 405,855.37, 559,991.53 and 242,487.36 is: 334,579.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,855.37 : 559,991.53 = 242,487.36 : x
  2. Step 2: Convert to fraction form
    405,855.37/559,991.53 = 242,487.36/x
  3. Step 3: Cross multiply
    405,855.37x = 559,991.53 × 242,487.36
  4. Step 4: Simplify right side
    405,855.37x = 135,790,869,427.39
  5. Step 5: Solve for x
    x = 135,790,869,427.39/405,855.37
  6. Step 6: Final answer
    x = 334,579.46

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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.