Finding the Fourth Proportional to 319,421,107.08, 440,802,455.72 and 172,743,391.08
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Solution
The fourth proportional to 319,421,107.08, 440,802,455.72 and 172,743,391.08 is: 238,386,597.85
Step by Step Solution
- Step 1: Write the proportion equation
319,421,107.08 : 440,802,455.72 = 172,743,391.08 : x - Step 2: Convert to fraction form
319,421,107.08/440,802,455.72 = 172,743,391.08/x - Step 3: Cross multiply
319,421,107.08x = 440,802,455.72 × 172,743,391.08 - Step 4: Simplify right side
319,421,107.08x = 76,145,710,997,464,352 - Step 5: Solve for x
x = 76,145,710,997,464,352/319,421,107.08 - Step 6: Final answer
x = 238,386,597.85
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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.