Finding the Fourth Proportional to 318,656.71, 477,982.93 and 129,114.28
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Solution
The fourth proportional to 318,656.71, 477,982.93 and 129,114.28 is: 193,670.55
Step by Step Solution
- Step 1: Write the proportion equation
318,656.71 : 477,982.93 = 129,114.28 : x - Step 2: Convert to fraction form
318,656.71/477,982.93 = 129,114.28/x - Step 3: Cross multiply
318,656.71x = 477,982.93 × 129,114.28 - Step 4: Simplify right side
318,656.71x = 61,714,418,823.75 - Step 5: Solve for x
x = 61,714,418,823.75/318,656.71 - Step 6: Final answer
x = 193,670.55
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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.