Finding the Fourth Proportional to 319,558.80, 440,990.79 and 176,318.82
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Solution
The fourth proportional to 319,558.80, 440,990.79 and 176,318.82 is: 243,319.78
Step by Step Solution
- Step 1: Write the proportion equation
319,558.80 : 440,990.79 = 176,318.82 : x - Step 2: Convert to fraction form
319,558.80/440,990.79 = 176,318.82/x - Step 3: Cross multiply
319,558.80x = 440,990.79 × 176,318.82 - Step 4: Simplify right side
319,558.80x = 77,754,975,723.67 - Step 5: Solve for x
x = 77,754,975,723.67/319,558.80 - Step 6: Final answer
x = 243,319.78
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1.5x scale
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.