Finding the Fourth Proportional to 210,514.52, 290,638.76 and 136,996.99
Calculator
Solution
The fourth proportional to 210,514.52, 290,638.76 and 136,996.99 is: 189,139.61
Step by Step Solution
- Step 1: Write the proportion equation
210,514.52 : 290,638.76 = 136,996.99 : x - Step 2: Convert to fraction form
210,514.52/290,638.76 = 136,996.99/x - Step 3: Cross multiply
210,514.52x = 290,638.76 × 136,996.99 - Step 4: Simplify right side
210,514.52x = 39,816,633,885.75 - Step 5: Solve for x
x = 39,816,633,885.75/210,514.52 - Step 6: Final answer
x = 189,139.61
Related Problems
Find fourth proportional to 105,257.26, 145,319.38 and 68,498.49
Half scale
Find fourth proportional to 421,029.05, 581,277.51 and 273,993.98
Double scale
Find fourth proportional to 210,515.52, 290,640.14 and 136,997.99
Similar ratio
Find fourth proportional to 315,771.78, 435,958.13 and 205,495.48
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.