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Finding the Fourth Proportional to 199,336.80, 299,019.60 and 66,309.60

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Solution

The fourth proportional to 199,336.80, 299,019.60 and 66,309.60 is: 99,469.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,336.80 : 299,019.60 = 66,309.60 : x
  2. Step 2: Convert to fraction form
    199,336.80/299,019.60 = 66,309.60/x
  3. Step 3: Cross multiply
    199,336.80x = 299,019.60 × 66,309.60
  4. Step 4: Simplify right side
    199,336.80x = 19,827,870,068.16
  5. Step 5: Solve for x
    x = 19,827,870,068.16/199,336.80
  6. Step 6: Final answer
    x = 99,469.19

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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.