Finding the Fourth Proportional to 286,703.42, 395,660.87 and 157,651.71
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Solution
The fourth proportional to 286,703.42, 395,660.87 and 157,651.71 is: 217,564.94
Step by Step Solution
- Step 1: Write the proportion equation
286,703.42 : 395,660.87 = 157,651.71 : x - Step 2: Convert to fraction form
286,703.42/395,660.87 = 157,651.71/x - Step 3: Cross multiply
286,703.42x = 395,660.87 × 157,651.71 - Step 4: Simplify right side
286,703.42x = 62,376,611,947.33 - Step 5: Solve for x
x = 62,376,611,947.33/286,703.42 - Step 6: Final answer
x = 217,564.94
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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.