Finding the Fourth Proportional to 266,477.96, 399,711.36 and 86,563.20
Calculator
Solution
The fourth proportional to 266,477.96, 399,711.36 and 86,563.20 is: 129,842.99
Step by Step Solution
- Step 1: Write the proportion equation
266,477.96 : 399,711.36 = 86,563.20 : x - Step 2: Convert to fraction form
266,477.96/399,711.36 = 86,563.20/x - Step 3: Cross multiply
266,477.96x = 399,711.36 × 86,563.20 - Step 4: Simplify right side
266,477.96x = 34,600,294,397.95 - Step 5: Solve for x
x = 34,600,294,397.95/266,477.96 - Step 6: Final answer
x = 129,842.99
Related Problems
Find fourth proportional to 133,238.98, 199,855.68 and 43,281.60
Half scale
Find fourth proportional to 532,955.92, 799,422.72 and 173,126.40
Double scale
Find fourth proportional to 266,478.96, 399,712.86 and 86,564.20
Similar ratio
Find fourth proportional to 399,716.94, 599,567.04 and 129,844.80
1.5x scale
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.