Finding the Fourth Proportional to 389,087.13, 536,926.28 and 216,995.75
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Solution
The fourth proportional to 389,087.13, 536,926.28 and 216,995.75 is: 299,446.35
Step by Step Solution
- Step 1: Write the proportion equation
389,087.13 : 536,926.28 = 216,995.75 : x - Step 2: Convert to fraction form
389,087.13/536,926.28 = 216,995.75/x - Step 3: Cross multiply
389,087.13x = 536,926.28 × 216,995.75 - Step 4: Simplify right side
389,087.13x = 116,510,720,823.31 - Step 5: Solve for x
x = 116,510,720,823.31/389,087.13 - Step 6: Final answer
x = 299,446.35
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.