Finding the Fourth Proportional to 207,534.42, 286,417.86 and 121,488.21
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Solution
The fourth proportional to 207,534.42, 286,417.86 and 121,488.21 is: 167,665.65
Step by Step Solution
- Step 1: Write the proportion equation
207,534.42 : 286,417.86 = 121,488.21 : x - Step 2: Convert to fraction form
207,534.42/286,417.86 = 121,488.21/x - Step 3: Cross multiply
207,534.42x = 286,417.86 × 121,488.21 - Step 4: Simplify right side
207,534.42x = 34,796,393,123.43 - Step 5: Solve for x
x = 34,796,393,123.43/207,534.42 - Step 6: Final answer
x = 167,665.65
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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.