Finding the Fourth Proportional to 291,744.40, 438,272.70 and 280,590.70
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Solution
The fourth proportional to 291,744.40, 438,272.70 and 280,590.70 is: 421,517.07
Step by Step Solution
- Step 1: Write the proportion equation
291,744.40 : 438,272.70 = 280,590.70 : x - Step 2: Convert to fraction form
291,744.40/438,272.70 = 280,590.70/x - Step 3: Cross multiply
291,744.40x = 438,272.70 × 280,590.70 - Step 4: Simplify right side
291,744.40x = 122,975,243,683.89 - Step 5: Solve for x
x = 122,975,243,683.89/291,744.40 - Step 6: Final answer
x = 421,517.07
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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.