Finding the Fourth Proportional to 291,971.12, 437,955.72 and 70,355.12
Calculator
Solution
The fourth proportional to 291,971.12, 437,955.72 and 70,355.12 is: 105,532.45
Step by Step Solution
- Step 1: Write the proportion equation
291,971.12 : 437,955.72 = 70,355.12 : x - Step 2: Convert to fraction form
291,971.12/437,955.72 = 70,355.12/x - Step 3: Cross multiply
291,971.12x = 437,955.72 × 70,355.12 - Step 4: Simplify right side
291,971.12x = 30,812,427,235.29 - Step 5: Solve for x
x = 30,812,427,235.29/291,971.12 - Step 6: Final answer
x = 105,532.45
Related Problems
Find fourth proportional to 145,985.56, 218,977.86 and 35,177.56
Half scale
Find fourth proportional to 583,942.24, 875,911.44 and 140,710.24
Double scale
Find fourth proportional to 291,972.12, 437,957.22 and 70,356.12
Similar ratio
Find fourth proportional to 437,956.68, 656,933.58 and 105,532.68
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.