Finding the Fourth Proportional to 280,701.84, 387,368.64 and 151,640.36
Calculator
Solution
The fourth proportional to 280,701.84, 387,368.64 and 151,640.36 is: 209,263.75
Step by Step Solution
- Step 1: Write the proportion equation
280,701.84 : 387,368.64 = 151,640.36 : x - Step 2: Convert to fraction form
280,701.84/387,368.64 = 151,640.36/x - Step 3: Cross multiply
280,701.84x = 387,368.64 × 151,640.36 - Step 4: Simplify right side
280,701.84x = 58,740,720,022.31 - Step 5: Solve for x
x = 58,740,720,022.31/280,701.84 - Step 6: Final answer
x = 209,263.75
Related Problems
Find fourth proportional to 140,350.92, 193,684.32 and 75,820.18
Half scale
Find fourth proportional to 561,403.68, 774,737.28 and 303,280.72
Double scale
Find fourth proportional to 280,702.84, 387,370.02 and 151,641.36
Similar ratio
Find fourth proportional to 421,052.76, 581,052.96 and 227,460.54
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.