Finding the Fourth Proportional to 286,478.24, 395,347.01 and 157,415.67
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Solution
The fourth proportional to 286,478.24, 395,347.01 and 157,415.67 is: 217,237.49
Step by Step Solution
- Step 1: Write the proportion equation
286,478.24 : 395,347.01 = 157,415.67 : x - Step 2: Convert to fraction form
286,478.24/395,347.01 = 157,415.67/x - Step 3: Cross multiply
286,478.24x = 395,347.01 × 157,415.67 - Step 4: Simplify right side
286,478.24x = 62,233,813,674.57 - Step 5: Solve for x
x = 62,233,813,674.57/286,478.24 - Step 6: Final answer
x = 217,237.49
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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.