Finding the Fourth Proportional to 221,805,460.99, 306,070,994.79 and 122,684,075.02
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Solution
The fourth proportional to 221,805,460.99, 306,070,994.79 and 122,684,075.02 is: 169,292,661.77
Step by Step Solution
- Step 1: Write the proportion equation
221,805,460.99 : 306,070,994.79 = 122,684,075.02 : x - Step 2: Convert to fraction form
221,805,460.99/306,070,994.79 = 122,684,075.02/x - Step 3: Cross multiply
221,805,460.99x = 306,070,994.79 × 122,684,075.02 - Step 4: Simplify right side
221,805,460.99x = 37,550,036,886,644,976 - Step 5: Solve for x
x = 37,550,036,886,644,976/221,805,460.99 - Step 6: Final answer
x = 169,292,661.77
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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.