Finding the Fourth Proportional to 215,371,043.24, 323,137,983.36 and 84,306,987.68
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Solution
The fourth proportional to 215,371,043.24, 323,137,983.36 and 84,306,987.68 is: 126,492,352.79
Step by Step Solution
- Step 1: Write the proportion equation
215,371,043.24 : 323,137,983.36 = 84,306,987.68 : x - Step 2: Convert to fraction form
215,371,043.24/323,137,983.36 = 84,306,987.68/x - Step 3: Cross multiply
215,371,043.24x = 323,137,983.36 × 84,306,987.68 - Step 4: Simplify right side
215,371,043.24x = 27,242,789,982,071,568 - Step 5: Solve for x
x = 27,242,789,982,071,568/215,371,043.24 - Step 6: Final answer
x = 126,492,352.79
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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.