Finding the Fourth Proportional to 319,356.38, 440,705.67 and 176,129.66
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Solution
The fourth proportional to 319,356.38, 440,705.67 and 176,129.66 is: 243,055.55
Step by Step Solution
- Step 1: Write the proportion equation
319,356.38 : 440,705.67 = 176,129.66 : x - Step 2: Convert to fraction form
319,356.38/440,705.67 = 176,129.66/x - Step 3: Cross multiply
319,356.38x = 440,705.67 × 176,129.66 - Step 4: Simplify right side
319,356.38x = 77,621,339,817.17 - Step 5: Solve for x
x = 77,621,339,817.17/319,356.38 - Step 6: Final answer
x = 243,055.55
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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.