Finding the Fourth Proportional to 286,965.99, 396,011.21 and 157,912.34
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Solution
The fourth proportional to 286,965.99, 396,011.21 and 157,912.34 is: 217,918.00
Step by Step Solution
- Step 1: Write the proportion equation
286,965.99 : 396,011.21 = 157,912.34 : x - Step 2: Convert to fraction form
286,965.99/396,011.21 = 157,912.34/x - Step 3: Cross multiply
286,965.99x = 396,011.21 × 157,912.34 - Step 4: Simplify right side
286,965.99x = 62,535,054,067.71 - Step 5: Solve for x
x = 62,535,054,067.71/286,965.99 - Step 6: Final answer
x = 217,918.00
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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.