Finding the Fourth Proportional to 310,374.72, 465,526.85 and 85,766.99
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Solution
The fourth proportional to 310,374.72, 465,526.85 and 85,766.99 is: 128,640.74
Step by Step Solution
- Step 1: Write the proportion equation
310,374.72 : 465,526.85 = 85,766.99 : x - Step 2: Convert to fraction form
310,374.72/465,526.85 = 85,766.99/x - Step 3: Cross multiply
310,374.72x = 465,526.85 × 85,766.99 - Step 4: Simplify right side
310,374.72x = 39,926,833,932.21 - Step 5: Solve for x
x = 39,926,833,932.21/310,374.72 - Step 6: Final answer
x = 128,640.74
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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.