Finding the Fourth Proportional to 310,382.36, 465,582.33 and 85,742.84
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Solution
The fourth proportional to 310,382.36, 465,582.33 and 85,742.84 is: 128,616.68
Step by Step Solution
- Step 1: Write the proportion equation
310,382.36 : 465,582.33 = 85,742.84 : x - Step 2: Convert to fraction form
310,382.36/465,582.33 = 85,742.84/x - Step 3: Cross multiply
310,382.36x = 465,582.33 × 85,742.84 - Step 4: Simplify right side
310,382.36x = 39,920,349,773.07 - Step 5: Solve for x
x = 39,920,349,773.07/310,382.36 - Step 6: Final answer
x = 128,616.68
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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.