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Finding the Fourth Proportional to 216,703.80, 324,422.10 and 154,495.80

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Solution

The fourth proportional to 216,703.80, 324,422.10 and 154,495.80 is: 231,291.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,703.80 : 324,422.10 = 154,495.80 : x
  2. Step 2: Convert to fraction form
    216,703.80/324,422.10 = 154,495.80/x
  3. Step 3: Cross multiply
    216,703.80x = 324,422.10 × 154,495.80
  4. Step 4: Simplify right side
    216,703.80x = 50,121,851,877.18
  5. Step 5: Solve for x
    x = 50,121,851,877.18/216,703.80
  6. Step 6: Final answer
    x = 231,291.98

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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.