Home / 421,823.44-632,688.36-106,280.32

Finding the Fourth Proportional to 421,823.44, 632,688.36 and 106,280.32

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Solution

The fourth proportional to 421,823.44, 632,688.36 and 106,280.32 is: 159,408.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,823.44 : 632,688.36 = 106,280.32 : x
  2. Step 2: Convert to fraction form
    421,823.44/632,688.36 = 106,280.32/x
  3. Step 3: Cross multiply
    421,823.44x = 632,688.36 × 106,280.32
  4. Step 4: Simplify right side
    421,823.44x = 67,242,321,361.08
  5. Step 5: Solve for x
    x = 67,242,321,361.08/421,823.44
  6. Step 6: Final answer
    x = 159,408.69

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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.