Home / 287,786.20-431,433.16-110,420.50

Finding the Fourth Proportional to 287,786.20, 431,433.16 and 110,420.50

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Solution

The fourth proportional to 287,786.20, 431,433.16 and 110,420.50 is: 165,536.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,786.20 : 431,433.16 = 110,420.50 : x
  2. Step 2: Convert to fraction form
    287,786.20/431,433.16 = 110,420.50/x
  3. Step 3: Cross multiply
    287,786.20x = 431,433.16 × 110,420.50
  4. Step 4: Simplify right side
    287,786.20x = 47,639,065,243.78
  5. Step 5: Solve for x
    x = 47,639,065,243.78/287,786.20
  6. Step 6: Final answer
    x = 165,536.31

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