Finding the Fourth Proportional to 339,965.40, 509,948.10 and 306,139.80
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Solution
The fourth proportional to 339,965.40, 509,948.10 and 306,139.80 is: 459,209.70
Step by Step Solution
- Step 1: Write the proportion equation
339,965.40 : 509,948.10 = 306,139.80 : x - Step 2: Convert to fraction form
339,965.40/509,948.10 = 306,139.80/x - Step 3: Cross multiply
339,965.40x = 509,948.10 × 306,139.80 - Step 4: Simplify right side
339,965.40x = 156,115,409,344.38 - Step 5: Solve for x
x = 156,115,409,344.38/339,965.40 - Step 6: Final answer
x = 459,209.70
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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.