Finding the Fourth Proportional to 279,335.12, 385,465.64 and 156,818.43
Calculator
Solution
The fourth proportional to 279,335.12, 385,465.64 and 156,818.43 is: 216,399.99
Step by Step Solution
- Step 1: Write the proportion equation
279,335.12 : 385,465.64 = 156,818.43 : x - Step 2: Convert to fraction form
279,335.12/385,465.64 = 156,818.43/x - Step 3: Cross multiply
279,335.12x = 385,465.64 × 156,818.43 - Step 4: Simplify right side
279,335.12x = 60,448,115,699.65 - Step 5: Solve for x
x = 60,448,115,699.65/279,335.12 - Step 6: Final answer
x = 216,399.99
Related Problems
Find fourth proportional to 139,667.56, 192,732.82 and 78,409.22
Half scale
Find fourth proportional to 558,670.23, 770,931.27 and 313,636.86
Double scale
Find fourth proportional to 279,336.12, 385,467.01 and 156,819.43
Similar ratio
Find fourth proportional to 419,002.67, 578,198.45 and 235,227.65
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.