Finding the Fourth Proportional to 221,188,108.16, 305,238,956.96 and 122,068,136
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Solution
The fourth proportional to 221,188,108.16, 305,238,956.96 and 122,068,136 is: 168,453,678.73
Step by Step Solution
- Step 1: Write the proportion equation
221,188,108.16 : 305,238,956.96 = 122,068,136 : x - Step 2: Convert to fraction form
221,188,108.16/305,238,956.96 = 122,068,136/x - Step 3: Cross multiply
221,188,108.16x = 305,238,956.96 × 122,068,136 - Step 4: Simplify right side
221,188,108.16x = 37,259,950,510,691,424 - Step 5: Solve for x
x = 37,259,950,510,691,424/221,188,108.16 - Step 6: Final answer
x = 168,453,678.73
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.