Home / 287,784.53-431,976.20-211,968.67

Finding the Fourth Proportional to 287,784.53, 431,976.20 and 211,968.67

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Solution

The fourth proportional to 287,784.53, 431,976.20 and 211,968.67 is: 318,173.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,784.53 : 431,976.20 = 211,968.67 : x
  2. Step 2: Convert to fraction form
    287,784.53/431,976.20 = 211,968.67/x
  3. Step 3: Cross multiply
    287,784.53x = 431,976.20 × 211,968.67
  4. Step 4: Simplify right side
    287,784.53x = 91,565,420,585.65
  5. Step 5: Solve for x
    x = 91,565,420,585.65/287,784.53
  6. Step 6: Final answer
    x = 318,173.53

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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.