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Finding the Fourth Proportional to 216,572.51, 324,881.04 and 81,750.14

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Solution

The fourth proportional to 216,572.51, 324,881.04 and 81,750.14 is: 122,633.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,572.51 : 324,881.04 = 81,750.14 : x
  2. Step 2: Convert to fraction form
    216,572.51/324,881.04 = 81,750.14/x
  3. Step 3: Cross multiply
    216,572.51x = 324,881.04 × 81,750.14
  4. Step 4: Simplify right side
    216,572.51x = 26,559,068,878.94
  5. Step 5: Solve for x
    x = 26,559,068,878.94/216,572.51
  6. Step 6: Final answer
    x = 122,633.61

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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.