Finding the Fourth Proportional to 395,389.15, 545,639.64 and 214,101.07
Calculator
Solution
The fourth proportional to 395,389.15, 545,639.64 and 214,101.07 is: 295,460.90
Step by Step Solution
- Step 1: Write the proportion equation
395,389.15 : 545,639.64 = 214,101.07 : x - Step 2: Convert to fraction form
395,389.15/545,639.64 = 214,101.07/x - Step 3: Cross multiply
395,389.15x = 545,639.64 × 214,101.07 - Step 4: Simplify right side
395,389.15x = 116,822,032,864.98 - Step 5: Solve for x
x = 116,822,032,864.98/395,389.15 - Step 6: Final answer
x = 295,460.90
Related Problems
Find fourth proportional to 197,694.57, 272,819.82 and 107,050.54
Half scale
Find fourth proportional to 790,778.30, 1,091,279.28 and 428,202.15
Double scale
Find fourth proportional to 395,390.15, 545,641.02 and 214,102.07
Similar ratio
Find fourth proportional to 593,083.72, 818,459.46 and 321,151.61
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.