Finding the Fourth Proportional to 217,966.80, 300,803.04 and 122,473.20
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Solution
The fourth proportional to 217,966.80, 300,803.04 and 122,473.20 is: 169,017.99
Step by Step Solution
- Step 1: Write the proportion equation
217,966.80 : 300,803.04 = 122,473.20 : x - Step 2: Convert to fraction form
217,966.80/300,803.04 = 122,473.20/x - Step 3: Cross multiply
217,966.80x = 300,803.04 × 122,473.20 - Step 4: Simplify right side
217,966.80x = 36,840,310,878.53 - Step 5: Solve for x
x = 36,840,310,878.53/217,966.80 - Step 6: Final answer
x = 169,017.99
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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.