Finding the Fourth Proportional to 428,438.08, 591,109.44 and 247,125.70
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Solution
The fourth proportional to 428,438.08, 591,109.44 and 247,125.70 is: 340,955.53
Step by Step Solution
- Step 1: Write the proportion equation
428,438.08 : 591,109.44 = 247,125.70 : x - Step 2: Convert to fraction form
428,438.08/591,109.44 = 247,125.70/x - Step 3: Cross multiply
428,438.08x = 591,109.44 × 247,125.70 - Step 4: Simplify right side
428,438.08x = 146,078,334,136.61 - Step 5: Solve for x
x = 146,078,334,136.61/428,438.08 - Step 6: Final answer
x = 340,955.53
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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.