Finding the Fourth Proportional to 319,864.79, 479,797.80 and 83,207.09
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Solution
The fourth proportional to 319,864.79, 479,797.80 and 83,207.09 is: 124,810.80
Step by Step Solution
- Step 1: Write the proportion equation
319,864.79 : 479,797.80 = 83,207.09 : x - Step 2: Convert to fraction form
319,864.79/479,797.80 = 83,207.09/x - Step 3: Cross multiply
319,864.79x = 479,797.80 × 83,207.09 - Step 4: Simplify right side
319,864.79x = 39,922,579,613.87 - Step 5: Solve for x
x = 39,922,579,613.87/319,864.79 - Step 6: Final answer
x = 124,810.80
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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.