Finding the Fourth Proportional to 128,958,438.30, 193,437,657.45 and 33,220,326.30
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Solution
The fourth proportional to 128,958,438.30, 193,437,657.45 and 33,220,326.30 is: 49,830,489.45
Step by Step Solution
- Step 1: Write the proportion equation
128,958,438.30 : 193,437,657.45 = 33,220,326.30 : x - Step 2: Convert to fraction form
128,958,438.30/193,437,657.45 = 33,220,326.30/x - Step 3: Cross multiply
128,958,438.30x = 193,437,657.45 × 33,220,326.30 - Step 4: Simplify right side
128,958,438.30x = 6,426,062,099,196,626 - Step 5: Solve for x
x = 6,426,062,099,196,626/128,958,438.30 - Step 6: Final answer
x = 49,830,489.45
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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.