Finding the Fourth Proportional to 223,485.59, 308,421.20 and 138,629.99
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Solution
The fourth proportional to 223,485.59, 308,421.20 and 138,629.99 is: 191,316.26
Step by Step Solution
- Step 1: Write the proportion equation
223,485.59 : 308,421.20 = 138,629.99 : x - Step 2: Convert to fraction form
223,485.59/308,421.20 = 138,629.99/x - Step 3: Cross multiply
223,485.59x = 308,421.20 × 138,629.99 - Step 4: Simplify right side
223,485.59x = 42,756,427,871.79 - Step 5: Solve for x
x = 42,756,427,871.79/223,485.59 - Step 6: Final answer
x = 191,316.26
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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.