Finding the Fourth Proportional to 292,387.20, 438,580.80 and 70,771.20
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Solution
The fourth proportional to 292,387.20, 438,580.80 and 70,771.20 is: 106,156.80
Step by Step Solution
- Step 1: Write the proportion equation
292,387.20 : 438,580.80 = 70,771.20 : x - Step 2: Convert to fraction form
292,387.20/438,580.80 = 70,771.20/x - Step 3: Cross multiply
292,387.20x = 438,580.80 × 70,771.20 - Step 4: Simplify right side
292,387.20x = 31,038,889,512.96 - Step 5: Solve for x
x = 31,038,889,512.96/292,387.20 - Step 6: Final answer
x = 106,156.80
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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.