Finding the Fourth Proportional to 342,159.58, 513,206.37 and 105,438.70
Calculator
Solution
The fourth proportional to 342,159.58, 513,206.37 and 105,438.70 is: 158,147.88
Step by Step Solution
- Step 1: Write the proportion equation
342,159.58 : 513,206.37 = 105,438.70 : x - Step 2: Convert to fraction form
342,159.58/513,206.37 = 105,438.70/x - Step 3: Cross multiply
342,159.58x = 513,206.37 × 105,438.70 - Step 4: Simplify right side
342,159.58x = 54,111,812,484.52 - Step 5: Solve for x
x = 54,111,812,484.52/342,159.58 - Step 6: Final answer
x = 158,147.88
Related Problems
Find fourth proportional to 171,079.79, 256,603.19 and 52,719.35
Half scale
Find fourth proportional to 684,319.16, 1,026,412.74 and 210,877.40
Double scale
Find fourth proportional to 342,160.58, 513,207.87 and 105,439.70
Similar ratio
Find fourth proportional to 513,239.37, 769,809.56 and 158,158.05
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.