Finding the Fourth Proportional to 316,443.05, 474,590.75 and 91,743.18
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Solution
The fourth proportional to 316,443.05, 474,590.75 and 91,743.18 is: 137,593.37
Step by Step Solution
- Step 1: Write the proportion equation
316,443.05 : 474,590.75 = 91,743.18 : x - Step 2: Convert to fraction form
316,443.05/474,590.75 = 91,743.18/x - Step 3: Cross multiply
316,443.05x = 474,590.75 × 91,743.18 - Step 4: Simplify right side
316,443.05x = 43,540,465,034.73 - Step 5: Solve for x
x = 43,540,465,034.73/316,443.05 - Step 6: Final answer
x = 137,593.37
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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.