Finding the Fourth Proportional to 511,405.89, 767,139.59 and 156,422.99
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Solution
The fourth proportional to 511,405.89, 767,139.59 and 156,422.99 is: 234,643.89
Step by Step Solution
- Step 1: Write the proportion equation
511,405.89 : 767,139.59 = 156,422.99 : x - Step 2: Convert to fraction form
511,405.89/767,139.59 = 156,422.99/x - Step 3: Cross multiply
511,405.89x = 767,139.59 × 156,422.99 - Step 4: Simplify right side
511,405.89x = 119,998,268,415.17 - Step 5: Solve for x
x = 119,998,268,415.17/511,405.89 - Step 6: Final answer
x = 234,643.89
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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.