Finding the Fourth Proportional to 310,349.84, 465,530.61 and 85,716.25
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Solution
The fourth proportional to 310,349.84, 465,530.61 and 85,716.25 is: 128,575.99
Step by Step Solution
- Step 1: Write the proportion equation
310,349.84 : 465,530.61 = 85,716.25 : x - Step 2: Convert to fraction form
310,349.84/465,530.61 = 85,716.25/x - Step 3: Cross multiply
310,349.84x = 465,530.61 × 85,716.25 - Step 4: Simplify right side
310,349.84x = 39,903,537,307.02 - Step 5: Solve for x
x = 39,903,537,307.02/310,349.84 - Step 6: Final answer
x = 128,575.99
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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.