Finding the Fourth Proportional to 286,235.09, 395,011.55 and 157,186.29
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Solution
The fourth proportional to 286,235.09, 395,011.55 and 157,186.29 is: 216,920.99
Step by Step Solution
- Step 1: Write the proportion equation
286,235.09 : 395,011.55 = 157,186.29 : x - Step 2: Convert to fraction form
286,235.09/395,011.55 = 157,186.29/x - Step 3: Cross multiply
286,235.09x = 395,011.55 × 157,186.29 - Step 4: Simplify right side
286,235.09x = 62,090,399,265.72 - Step 5: Solve for x
x = 62,090,399,265.72/286,235.09 - Step 6: Final answer
x = 216,920.99
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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.