Finding the Fourth Proportional to 221,733,368.17, 305,994,030.70 and 122,620,784.20
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Solution
The fourth proportional to 221,733,368.17, 305,994,030.70 and 122,620,784.20 is: 169,217,778.61
Step by Step Solution
- Step 1: Write the proportion equation
221,733,368.17 : 305,994,030.70 = 122,620,784.20 : x - Step 2: Convert to fraction form
221,733,368.17/305,994,030.70 = 122,620,784.20/x - Step 3: Cross multiply
221,733,368.17x = 305,994,030.70 × 122,620,784.20 - Step 4: Simplify right side
221,733,368.17x = 37,521,228,004,952,872 - Step 5: Solve for x
x = 37,521,228,004,952,872/221,733,368.17 - Step 6: Final answer
x = 169,217,778.61
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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.