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Finding the Fourth Proportional to 216,418.16, 324,643.55 and 64,603.24

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Solution

The fourth proportional to 216,418.16, 324,643.55 and 64,603.24 is: 96,909.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,418.16 : 324,643.55 = 64,603.24 : x
  2. Step 2: Convert to fraction form
    216,418.16/324,643.55 = 64,603.24/x
  3. Step 3: Cross multiply
    216,418.16x = 324,643.55 × 64,603.24
  4. Step 4: Simplify right side
    216,418.16x = 20,973,025,866.60
  5. Step 5: Solve for x
    x = 20,973,025,866.60/216,418.16
  6. Step 6: Final answer
    x = 96,909.73

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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.