Finding the Fourth Proportional to 511,763.49, 767,815.11 and 156,780.99
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Solution
The fourth proportional to 511,763.49, 767,815.11 and 156,780.99 is: 235,223.53
Step by Step Solution
- Step 1: Write the proportion equation
511,763.49 : 767,815.11 = 156,780.99 : x - Step 2: Convert to fraction form
511,763.49/767,815.11 = 156,780.99/x - Step 3: Cross multiply
511,763.49x = 767,815.11 × 156,780.99 - Step 4: Simplify right side
511,763.49x = 120,378,813,082.76 - Step 5: Solve for x
x = 120,378,813,082.76/511,763.49 - Step 6: Final answer
x = 235,223.53
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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.