Home / 405,588.12-608,469.46-121,301.20

Finding the Fourth Proportional to 405,588.12, 608,469.46 and 121,301.20

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Solution

The fourth proportional to 405,588.12, 608,469.46 and 121,301.20 is: 181,977.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,588.12 : 608,469.46 = 121,301.20 : x
  2. Step 2: Convert to fraction form
    405,588.12/608,469.46 = 121,301.20/x
  3. Step 3: Cross multiply
    405,588.12x = 608,469.46 × 121,301.20
  4. Step 4: Simplify right side
    405,588.12x = 73,808,075,661.35
  5. Step 5: Solve for x
    x = 73,808,075,661.35/405,588.12
  6. Step 6: Final answer
    x = 181,977.90

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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.