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Finding the Fourth Proportional to 216,218.93, 324,381.92 and 64,415.33

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Solution

The fourth proportional to 216,218.93, 324,381.92 and 64,415.33 is: 96,638.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,218.93 : 324,381.92 = 64,415.33 : x
  2. Step 2: Convert to fraction form
    216,218.93/324,381.92 = 64,415.33/x
  3. Step 3: Cross multiply
    216,218.93x = 324,381.92 × 64,415.33
  4. Step 4: Simplify right side
    216,218.93x = 20,895,166,780.79
  5. Step 5: Solve for x
    x = 20,895,166,780.79/216,218.93
  6. Step 6: Final answer
    x = 96,638.94

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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.