Home / 405,742.14-608,644.89-135,871.29

Finding the Fourth Proportional to 405,742.14, 608,644.89 and 135,871.29

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Solution

The fourth proportional to 405,742.14, 608,644.89 and 135,871.29 is: 203,817.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,742.14 : 608,644.89 = 135,871.29 : x
  2. Step 2: Convert to fraction form
    405,742.14/608,644.89 = 135,871.29/x
  3. Step 3: Cross multiply
    405,742.14x = 608,644.89 × 135,871.29
  4. Step 4: Simplify right side
    405,742.14x = 82,697,366,356.21
  5. Step 5: Solve for x
    x = 82,697,366,356.21/405,742.14
  6. Step 6: Final answer
    x = 203,817.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.