Home / 262,022.89-393,012.40-72,485.59

Finding the Fourth Proportional to 262,022.89, 393,012.40 and 72,485.59

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Solution

The fourth proportional to 262,022.89, 393,012.40 and 72,485.59 is: 108,722.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,022.89 : 393,012.40 = 72,485.59 : x
  2. Step 2: Convert to fraction form
    262,022.89/393,012.40 = 72,485.59/x
  3. Step 3: Cross multiply
    262,022.89x = 393,012.40 × 72,485.59
  4. Step 4: Simplify right side
    262,022.89x = 28,487,735,691.32
  5. Step 5: Solve for x
    x = 28,487,735,691.32/262,022.89
  6. Step 6: Final answer
    x = 108,722.32

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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.