Finding the Fourth Proportional to 420,144,918.09, 630,247,644.20 and 161,360,138.67
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Solution
The fourth proportional to 420,144,918.09, 630,247,644.20 and 161,360,138.67 is: 242,051,832.32
Step by Step Solution
- Step 1: Write the proportion equation
420,144,918.09 : 630,247,644.20 = 161,360,138.67 : x - Step 2: Convert to fraction form
420,144,918.09/630,247,644.20 = 161,360,138.67/x - Step 3: Cross multiply
420,144,918.09x = 630,247,644.20 × 161,360,138.67 - Step 4: Simplify right side
420,144,918.09x = 101,696,847,264,552,816 - Step 5: Solve for x
x = 101,696,847,264,552,816/420,144,918.09 - Step 6: Final answer
x = 242,051,832.32
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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.