Finding the Fourth Proportional to 422,331.79, 633,431.67 and 138,020.08
Calculator
Solution
The fourth proportional to 422,331.79, 633,431.67 and 138,020.08 is: 207,008.55
Step by Step Solution
- Step 1: Write the proportion equation
422,331.79 : 633,431.67 = 138,020.08 : x - Step 2: Convert to fraction form
422,331.79/633,431.67 = 138,020.08/x - Step 3: Cross multiply
422,331.79x = 633,431.67 × 138,020.08 - Step 4: Simplify right side
422,331.79x = 87,426,289,767.93 - Step 5: Solve for x
x = 87,426,289,767.93/422,331.79 - Step 6: Final answer
x = 207,008.55
Related Problems
Find fourth proportional to 211,165.90, 316,715.84 and 69,010.04
Half scale
Find fourth proportional to 844,663.58, 1,266,863.34 and 276,040.16
Double scale
Find fourth proportional to 422,332.79, 633,433.17 and 138,021.08
Similar ratio
Find fourth proportional to 633,497.69, 950,147.51 and 207,030.12
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.