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Finding the Fourth Proportional to 259,217.20, 388,998.60 and 118,903.60

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Solution

The fourth proportional to 259,217.20, 388,998.60 and 118,903.60 is: 178,434.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,217.20 : 388,998.60 = 118,903.60 : x
  2. Step 2: Convert to fraction form
    259,217.20/388,998.60 = 118,903.60/x
  3. Step 3: Cross multiply
    259,217.20x = 388,998.60 × 118,903.60
  4. Step 4: Simplify right side
    259,217.20x = 46,253,333,934.96
  5. Step 5: Solve for x
    x = 46,253,333,934.96/259,217.20
  6. Step 6: Final answer
    x = 178,434.66

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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.