Finding the Fourth Proportional to 408,621,156.84, 563,909,105.94 and 222,994,129.80
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Solution
The fourth proportional to 408,621,156.84, 563,909,105.94 and 222,994,129.80 is: 307,738,398.42
Step by Step Solution
- Step 1: Write the proportion equation
408,621,156.84 : 563,909,105.94 = 222,994,129.80 : x - Step 2: Convert to fraction form
408,621,156.84/563,909,105.94 = 222,994,129.80/x - Step 3: Cross multiply
408,621,156.84x = 563,909,105.94 × 222,994,129.80 - Step 4: Simplify right side
408,621,156.84x = 125,748,420,365,386,336 - Step 5: Solve for x
x = 125,748,420,365,386,336/408,621,156.84 - Step 6: Final answer
x = 307,738,398.42
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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.