Finding the Fourth Proportional to 438,590.76, 605,401.20 and 257,236.49
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Solution
The fourth proportional to 438,590.76, 605,401.20 and 257,236.49 is: 355,071.95
Step by Step Solution
- Step 1: Write the proportion equation
438,590.76 : 605,401.20 = 257,236.49 : x - Step 2: Convert to fraction form
438,590.76/605,401.20 = 257,236.49/x - Step 3: Cross multiply
438,590.76x = 605,401.20 × 257,236.49 - Step 4: Simplify right side
438,590.76x = 155,731,276,702.78 - Step 5: Solve for x
x = 155,731,276,702.78/438,590.76 - Step 6: Final answer
x = 355,071.95
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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.