Finding the Fourth Proportional to 218,658,583.98, 328,070,716.88 and 131,281,121.52
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Solution
The fourth proportional to 218,658,583.98, 328,070,716.88 and 131,281,121.52 is: 196,971,419.39
Step by Step Solution
- Step 1: Write the proportion equation
218,658,583.98 : 328,070,716.88 = 131,281,121.52 : x - Step 2: Convert to fraction form
218,658,583.98/328,070,716.88 = 131,281,121.52/x - Step 3: Cross multiply
218,658,583.98x = 328,070,716.88 × 131,281,121.52 - Step 4: Simplify right side
218,658,583.98x = 43,069,491,649,220,392 - Step 5: Solve for x
x = 43,069,491,649,220,392/218,658,583.98 - Step 6: Final answer
x = 196,971,419.39
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.