Finding the Fourth Proportional to 311,335.31, 429,675.09 and 190,557.02
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Solution
The fourth proportional to 311,335.31, 429,675.09 and 190,557.02 is: 262,988.50
Step by Step Solution
- Step 1: Write the proportion equation
311,335.31 : 429,675.09 = 190,557.02 : x - Step 2: Convert to fraction form
311,335.31/429,675.09 = 190,557.02/x - Step 3: Cross multiply
311,335.31x = 429,675.09 × 190,557.02 - Step 4: Simplify right side
311,335.31x = 81,877,604,718.63 - Step 5: Solve for x
x = 81,877,604,718.63/311,335.31 - Step 6: Final answer
x = 262,988.50
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.