Home / 216,042.40-324,063.60-66,305.80

Finding the Fourth Proportional to 216,042.40, 324,063.60 and 66,305.80

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Solution

The fourth proportional to 216,042.40, 324,063.60 and 66,305.80 is: 99,458.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,042.40 : 324,063.60 = 66,305.80 : x
  2. Step 2: Convert to fraction form
    216,042.40/324,063.60 = 66,305.80/x
  3. Step 3: Cross multiply
    216,042.40x = 324,063.60 × 66,305.80
  4. Step 4: Simplify right side
    216,042.40x = 21,487,296,248.88
  5. Step 5: Solve for x
    x = 21,487,296,248.88/216,042.40
  6. Step 6: Final answer
    x = 99,458.70

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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.