Finding the Fourth Proportional to 418,725.78, 628,073.82 and 119,207.94
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Solution
The fourth proportional to 418,725.78, 628,073.82 and 119,207.94 is: 178,807.68
Step by Step Solution
- Step 1: Write the proportion equation
418,725.78 : 628,073.82 = 119,207.94 : x - Step 2: Convert to fraction form
418,725.78/628,073.82 = 119,207.94/x - Step 3: Cross multiply
418,725.78x = 628,073.82 × 119,207.94 - Step 4: Simplify right side
418,725.78x = 74,871,386,250.13 - Step 5: Solve for x
x = 74,871,386,250.13/418,725.78 - Step 6: Final answer
x = 178,807.68
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.