Finding the Fourth Proportional to 438,125.20, 655,729.80 and 317,840.20
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Solution
The fourth proportional to 438,125.20, 655,729.80 and 317,840.20 is: 475,702.59
Step by Step Solution
- Step 1: Write the proportion equation
438,125.20 : 655,729.80 = 317,840.20 : x - Step 2: Convert to fraction form
438,125.20/655,729.80 = 317,840.20/x - Step 3: Cross multiply
438,125.20x = 655,729.80 × 317,840.20 - Step 4: Simplify right side
438,125.20x = 208,417,290,777.96 - Step 5: Solve for x
x = 208,417,290,777.96/438,125.20 - Step 6: Final answer
x = 475,702.59
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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.