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Finding the Fourth Proportional to 216,344.84, 324,633.44 and 90,072.24

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Solution

The fourth proportional to 216,344.84, 324,633.44 and 90,072.24 is: 135,156.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,344.84 : 324,633.44 = 90,072.24 : x
  2. Step 2: Convert to fraction form
    216,344.84/324,633.44 = 90,072.24/x
  3. Step 3: Cross multiply
    216,344.84x = 324,633.44 × 90,072.24
  4. Step 4: Simplify right side
    216,344.84x = 29,240,461,119.71
  5. Step 5: Solve for x
    x = 29,240,461,119.71/216,344.84
  6. Step 6: Final answer
    x = 135,156.73

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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.