Finding the Fourth Proportional to 286,745.19, 395,718.30 and 157,688.94
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Solution
The fourth proportional to 286,745.19, 395,718.30 and 157,688.94 is: 217,616.20
Step by Step Solution
- Step 1: Write the proportion equation
286,745.19 : 395,718.30 = 157,688.94 : x - Step 2: Convert to fraction form
286,745.19/395,718.30 = 157,688.94/x - Step 3: Cross multiply
286,745.19x = 395,718.30 × 157,688.94 - Step 4: Simplify right side
286,745.19x = 62,400,399,265.60 - Step 5: Solve for x
x = 62,400,399,265.60/286,745.19 - Step 6: Final answer
x = 217,616.20
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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.