Finding the Fourth Proportional to 282,627.19, 390,021.09 and 155,300.05
Calculator
Solution
The fourth proportional to 282,627.19, 390,021.09 and 155,300.05 is: 214,311.63
Step by Step Solution
- Step 1: Write the proportion equation
282,627.19 : 390,021.09 = 155,300.05 : x - Step 2: Convert to fraction form
282,627.19/390,021.09 = 155,300.05/x - Step 3: Cross multiply
282,627.19x = 390,021.09 × 155,300.05 - Step 4: Simplify right side
282,627.19x = 60,570,294,778.05 - Step 5: Solve for x
x = 60,570,294,778.05/282,627.19 - Step 6: Final answer
x = 214,311.63
Related Problems
Find fourth proportional to 141,313.60, 195,010.55 and 77,650.03
Half scale
Find fourth proportional to 565,254.38, 780,042.18 and 310,600.10
Double scale
Find fourth proportional to 282,628.19, 390,022.47 and 155,301.05
Similar ratio
Find fourth proportional to 423,940.79, 585,031.64 and 232,950.08
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.