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Finding the Fourth Proportional to 216,539.64, 324,846.54 and 74,378.16

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Solution

The fourth proportional to 216,539.64, 324,846.54 and 74,378.16 is: 111,579.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,539.64 : 324,846.54 = 74,378.16 : x
  2. Step 2: Convert to fraction form
    216,539.64/324,846.54 = 74,378.16/x
  3. Step 3: Cross multiply
    216,539.64x = 324,846.54 × 74,378.16
  4. Step 4: Simplify right side
    216,539.64x = 24,161,487,927.57
  5. Step 5: Solve for x
    x = 24,161,487,927.57/216,539.64
  6. Step 6: Final answer
    x = 111,579.98

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1.5x scale

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.