Finding the Fourth Proportional to 515,431.80, 772,962.48 and 178,380.99
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Solution
The fourth proportional to 515,431.80, 772,962.48 and 178,380.99 is: 267,507.38
Step by Step Solution
- Step 1: Write the proportion equation
515,431.80 : 772,962.48 = 178,380.99 : x - Step 2: Convert to fraction form
515,431.80/772,962.48 = 178,380.99/x - Step 3: Cross multiply
515,431.80x = 772,962.48 × 178,380.99 - Step 4: Simplify right side
515,431.80x = 137,881,812,415.26 - Step 5: Solve for x
x = 137,881,812,415.26/515,431.80 - Step 6: Final answer
x = 267,507.38
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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.