Finding the Fourth Proportional to 513,971.14, 709,288.58 and 281,394.20
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Solution
The fourth proportional to 513,971.14, 709,288.58 and 281,394.20 is: 388,328.60
Step by Step Solution
- Step 1: Write the proportion equation
513,971.14 : 709,288.58 = 281,394.20 : x - Step 2: Convert to fraction form
513,971.14/709,288.58 = 281,394.20/x - Step 3: Cross multiply
513,971.14x = 709,288.58 × 281,394.20 - Step 4: Simplify right side
513,971.14x = 199,589,692,538.24 - Step 5: Solve for x
x = 199,589,692,538.24/513,971.14 - Step 6: Final answer
x = 388,328.60
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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.