Finding the Fourth Proportional to 245,138.80, 338,330.91 and 229,129.96
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Solution
The fourth proportional to 245,138.80, 338,330.91 and 229,129.96 is: 316,236.14
Step by Step Solution
- Step 1: Write the proportion equation
245,138.80 : 338,330.91 = 229,129.96 : x - Step 2: Convert to fraction form
245,138.80/338,330.91 = 229,129.96/x - Step 3: Cross multiply
245,138.80x = 338,330.91 × 229,129.96 - Step 4: Simplify right side
245,138.80x = 77,521,747,875.06 - Step 5: Solve for x
x = 77,521,747,875.06/245,138.80 - Step 6: Final answer
x = 316,236.14
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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.