Finding the Fourth Proportional to 310,437.24, 428,438.79 and 172,629.81
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Solution
The fourth proportional to 310,437.24, 428,438.79 and 172,629.81 is: 238,248.82
Step by Step Solution
- Step 1: Write the proportion equation
310,437.24 : 428,438.79 = 172,629.81 : x - Step 2: Convert to fraction form
310,437.24/428,438.79 = 172,629.81/x - Step 3: Cross multiply
310,437.24x = 428,438.79 × 172,629.81 - Step 4: Simplify right side
310,437.24x = 73,961,306,914.33 - Step 5: Solve for x
x = 73,961,306,914.33/310,437.24 - Step 6: Final answer
x = 238,248.82
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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.