Finding the Fourth Proportional to 278,941,826.80, 418,473,269.12 and 84,848,197.42
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Solution
The fourth proportional to 278,941,826.80, 418,473,269.12 and 84,848,197.42 is: 127,290,707.75
Step by Step Solution
- Step 1: Write the proportion equation
278,941,826.80 : 418,473,269.12 = 84,848,197.42 : x - Step 2: Convert to fraction form
278,941,826.80/418,473,269.12 = 84,848,197.42/x - Step 3: Cross multiply
278,941,826.80x = 418,473,269.12 × 84,848,197.42 - Step 4: Simplify right side
278,941,826.80x = 35,506,702,553,286,552 - Step 5: Solve for x
x = 35,506,702,553,286,552/278,941,826.80 - Step 6: Final answer
x = 127,290,707.75
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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.