Finding the Fourth Proportional to 239,418.99, 330,428.12 and 137,476.35
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Solution
The fourth proportional to 239,418.99, 330,428.12 and 137,476.35 is: 189,734.54
Step by Step Solution
- Step 1: Write the proportion equation
239,418.99 : 330,428.12 = 137,476.35 : x - Step 2: Convert to fraction form
239,418.99/330,428.12 = 137,476.35/x - Step 3: Cross multiply
239,418.99x = 330,428.12 × 137,476.35 - Step 4: Simplify right side
239,418.99x = 45,426,051,187.58 - Step 5: Solve for x
x = 45,426,051,187.58/239,418.99 - Step 6: Final answer
x = 189,734.54
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1.5x scale
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.