Finding the Fourth Proportional to 279,419.73, 385,588.50 and 158,553.81
Calculator
Solution
The fourth proportional to 279,419.73, 385,588.50 and 158,553.81 is: 218,798.17
Step by Step Solution
- Step 1: Write the proportion equation
279,419.73 : 385,588.50 = 158,553.81 : x - Step 2: Convert to fraction form
279,419.73/385,588.50 = 158,553.81/x - Step 3: Cross multiply
279,419.73x = 385,588.50 × 158,553.81 - Step 4: Simplify right side
279,419.73x = 61,136,525,767.19 - Step 5: Solve for x
x = 61,136,525,767.19/279,419.73 - Step 6: Final answer
x = 218,798.17
Related Problems
Find fourth proportional to 139,709.87, 192,794.25 and 79,276.91
Half scale
Find fourth proportional to 558,839.46, 771,177 and 317,107.62
Double scale
Find fourth proportional to 279,420.73, 385,589.88 and 158,554.81
Similar ratio
Find fourth proportional to 419,129.60, 578,382.75 and 237,830.72
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.