Finding the Fourth Proportional to 370,318.40, 511,039.68 and 209,173.76
Calculator
Solution
The fourth proportional to 370,318.40, 511,039.68 and 209,173.76 is: 288,659.95
Step by Step Solution
- Step 1: Write the proportion equation
370,318.40 : 511,039.68 = 209,173.76 : x - Step 2: Convert to fraction form
370,318.40/511,039.68 = 209,173.76/x - Step 3: Cross multiply
370,318.40x = 511,039.68 × 209,173.76 - Step 4: Simplify right side
370,318.40x = 106,896,091,374.80 - Step 5: Solve for x
x = 106,896,091,374.80/370,318.40 - Step 6: Final answer
x = 288,659.95
Related Problems
Find fourth proportional to 185,159.20, 255,519.84 and 104,586.88
Half scale
Find fourth proportional to 740,636.80, 1,022,079.36 and 418,347.52
Double scale
Find fourth proportional to 370,319.40, 511,041.06 and 209,174.76
Similar ratio
Find fourth proportional to 555,477.60, 766,559.52 and 313,760.64
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.