Finding the Fourth Proportional to 248,312.70, 342,647.79 and 139,392.09
Calculator
Solution
The fourth proportional to 248,312.70, 342,647.79 and 139,392.09 is: 192,347.76
Step by Step Solution
- Step 1: Write the proportion equation
248,312.70 : 342,647.79 = 139,392.09 : x - Step 2: Convert to fraction form
248,312.70/342,647.79 = 139,392.09/x - Step 3: Cross multiply
248,312.70x = 342,647.79 × 139,392.09 - Step 4: Simplify right side
248,312.70x = 47,762,391,581.98 - Step 5: Solve for x
x = 47,762,391,581.98/248,312.70 - Step 6: Final answer
x = 192,347.76
Related Problems
Find fourth proportional to 124,156.35, 171,323.90 and 69,696.05
Half scale
Find fourth proportional to 496,625.40, 685,295.58 and 278,784.18
Double scale
Find fourth proportional to 248,313.70, 342,649.17 and 139,393.09
Similar ratio
Find fourth proportional to 372,469.05, 513,971.69 and 209,088.14
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.