Finding the Fourth Proportional to 354,430.99, 489,152.70 and 216,690.74
Calculator
Solution
The fourth proportional to 354,430.99, 489,152.70 and 216,690.74 is: 299,056.41
Step by Step Solution
- Step 1: Write the proportion equation
354,430.99 : 489,152.70 = 216,690.74 : x - Step 2: Convert to fraction form
354,430.99/489,152.70 = 216,690.74/x - Step 3: Cross multiply
354,430.99x = 489,152.70 × 216,690.74 - Step 4: Simplify right side
354,430.99x = 105,994,857,940.21 - Step 5: Solve for x
x = 105,994,857,940.21/354,430.99 - Step 6: Final answer
x = 299,056.41
Related Problems
Find fourth proportional to 177,215.49, 244,576.35 and 108,345.37
Half scale
Find fourth proportional to 708,861.97, 978,305.39 and 433,381.47
Double scale
Find fourth proportional to 354,431.99, 489,154.08 and 216,691.74
Similar ratio
Find fourth proportional to 531,646.48, 733,729.04 and 325,036.10
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.