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Finding the Fourth Proportional to 216,702.80, 324,420.60 and 154,494.80

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Solution

The fourth proportional to 216,702.80, 324,420.60 and 154,494.80 is: 231,290.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,702.80 : 324,420.60 = 154,494.80 : x
  2. Step 2: Convert to fraction form
    216,702.80/324,420.60 = 154,494.80/x
  3. Step 3: Cross multiply
    216,702.80x = 324,420.60 × 154,494.80
  4. Step 4: Simplify right side
    216,702.80x = 50,121,295,712.88
  5. Step 5: Solve for x
    x = 50,121,295,712.88/216,702.80
  6. Step 6: Final answer
    x = 231,290.49

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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.