Finding the Fourth Proportional to 231,345.18, 319,128.12 and 134,538.44
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Solution
The fourth proportional to 231,345.18, 319,128.12 and 134,538.44 is: 185,588.47
Step by Step Solution
- Step 1: Write the proportion equation
231,345.18 : 319,128.12 = 134,538.44 : x - Step 2: Convert to fraction form
231,345.18/319,128.12 = 134,538.44/x - Step 3: Cross multiply
231,345.18x = 319,128.12 × 134,538.44 - Step 4: Simplify right side
231,345.18x = 42,934,997,829.29 - Step 5: Solve for x
x = 42,934,997,829.29/231,345.18 - Step 6: Final answer
x = 185,588.47
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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.