Finding the Fourth Proportional to 258,438.96, 356,646.06 and 143,715.15
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Solution
The fourth proportional to 258,438.96, 356,646.06 and 143,715.15 is: 198,327.07
Step by Step Solution
- Step 1: Write the proportion equation
258,438.96 : 356,646.06 = 143,715.15 : x - Step 2: Convert to fraction form
258,438.96/356,646.06 = 143,715.15/x - Step 3: Cross multiply
258,438.96x = 356,646.06 × 143,715.15 - Step 4: Simplify right side
258,438.96x = 51,255,442,009.81 - Step 5: Solve for x
x = 51,255,442,009.81/258,438.96 - Step 6: Final answer
x = 198,327.07
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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.