Finding the Fourth Proportional to 299,731.72, 449,539.86 and 139,763.62
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Solution
The fourth proportional to 299,731.72, 449,539.86 and 139,763.62 is: 209,618.52
Step by Step Solution
- Step 1: Write the proportion equation
299,731.72 : 449,539.86 = 139,763.62 : x - Step 2: Convert to fraction form
299,731.72/449,539.86 = 139,763.62/x - Step 3: Cross multiply
299,731.72x = 449,539.86 × 139,763.62 - Step 4: Simplify right side
299,731.72x = 62,829,318,167.89 - Step 5: Solve for x
x = 62,829,318,167.89/299,731.72 - Step 6: Final answer
x = 209,618.52
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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.