Finding the Fourth Proportional to 197,218,485.60, 272,151,551.68 and 107,908,496.80
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Solution
The fourth proportional to 197,218,485.60, 272,151,551.68 and 107,908,496.80 is: 148,908,276.80
Step by Step Solution
- Step 1: Write the proportion equation
197,218,485.60 : 272,151,551.68 = 107,908,496.80 : x - Step 2: Convert to fraction form
197,218,485.60/272,151,551.68 = 107,908,496.80/x - Step 3: Cross multiply
197,218,485.60x = 272,151,551.68 × 107,908,496.80 - Step 4: Simplify right side
197,218,485.60x = 29,367,464,843,576,316 - Step 5: Solve for x
x = 29,367,464,843,576,316/197,218,485.60 - Step 6: Final answer
x = 148,908,276.80
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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.