Finding the Fourth Proportional to 221,774,561.65, 306,143,130.20 and 138,183,991.95
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Solution
The fourth proportional to 221,774,561.65, 306,143,130.20 and 138,183,991.95 is: 190,752,625.20
Step by Step Solution
- Step 1: Write the proportion equation
221,774,561.65 : 306,143,130.20 = 138,183,991.95 : x - Step 2: Convert to fraction form
221,774,561.65/306,143,130.20 = 138,183,991.95/x - Step 3: Cross multiply
221,774,561.65x = 306,143,130.20 × 138,183,991.95 - Step 4: Simplify right side
221,774,561.65x = 42,304,079,838,228,112 - Step 5: Solve for x
x = 42,304,079,838,228,112/221,774,561.65 - Step 6: Final answer
x = 190,752,625.20
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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.