Home / 290,531.21-435,784.93-80,163.77

Finding the Fourth Proportional to 290,531.21, 435,784.93 and 80,163.77

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Solution

The fourth proportional to 290,531.21, 435,784.93 and 80,163.77 is: 120,242.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,531.21 : 435,784.93 = 80,163.77 : x
  2. Step 2: Convert to fraction form
    290,531.21/435,784.93 = 80,163.77/x
  3. Step 3: Cross multiply
    290,531.21x = 435,784.93 × 80,163.77
  4. Step 4: Simplify right side
    290,531.21x = 34,934,160,518.65
  5. Step 5: Solve for x
    x = 34,934,160,518.65/290,531.21
  6. Step 6: Final answer
    x = 120,242.37

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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.