Finding the Fourth Proportional to 286,726.40, 395,687.36 and 157,670.40
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Solution
The fourth proportional to 286,726.40, 395,687.36 and 157,670.40 is: 217,587.86
Step by Step Solution
- Step 1: Write the proportion equation
286,726.40 : 395,687.36 = 157,670.40 : x - Step 2: Convert to fraction form
286,726.40/395,687.36 = 157,670.40/x - Step 3: Cross multiply
286,726.40x = 395,687.36 × 157,670.40 - Step 4: Simplify right side
286,726.40x = 62,388,184,326.14 - Step 5: Solve for x
x = 62,388,184,326.14/286,726.40 - Step 6: Final answer
x = 217,587.86
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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.