Finding the Fourth Proportional to 258,974,178.40, 388,461,267.60 and 177,344,840.80
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Solution
The fourth proportional to 258,974,178.40, 388,461,267.60 and 177,344,840.80 is: 266,017,261.20
Step by Step Solution
- Step 1: Write the proportion equation
258,974,178.40 : 388,461,267.60 = 177,344,840.80 : x - Step 2: Convert to fraction form
258,974,178.40/388,461,267.60 = 177,344,840.80/x - Step 3: Cross multiply
258,974,178.40x = 388,461,267.60 × 177,344,840.80 - Step 4: Simplify right side
258,974,178.40x = 68,891,601,659,488,208 - Step 5: Solve for x
x = 68,891,601,659,488,208/258,974,178.40 - Step 6: Final answer
x = 266,017,261.20
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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.