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Finding the Fourth Proportional to 202,995.80, 304,493.70 and 78,336.80

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Solution

The fourth proportional to 202,995.80, 304,493.70 and 78,336.80 is: 117,505.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,995.80 : 304,493.70 = 78,336.80 : x
  2. Step 2: Convert to fraction form
    202,995.80/304,493.70 = 78,336.80/x
  3. Step 3: Cross multiply
    202,995.80x = 304,493.70 × 78,336.80
  4. Step 4: Simplify right side
    202,995.80x = 23,853,062,078.16
  5. Step 5: Solve for x
    x = 23,853,062,078.16/202,995.80
  6. Step 6: Final answer
    x = 117,505.20

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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.