Home / 405,189.30-607,889.03-215,493.69

Finding the Fourth Proportional to 405,189.30, 607,889.03 and 215,493.69

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Solution

The fourth proportional to 405,189.30, 607,889.03 and 215,493.69 is: 323,296.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,189.30 : 607,889.03 = 215,493.69 : x
  2. Step 2: Convert to fraction form
    405,189.30/607,889.03 = 215,493.69/x
  3. Step 3: Cross multiply
    405,189.30x = 607,889.03 × 215,493.69
  4. Step 4: Simplify right side
    405,189.30x = 130,996,249,107.75
  5. Step 5: Solve for x
    x = 130,996,249,107.75/405,189.30
  6. Step 6: Final answer
    x = 323,296.42

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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.