Finding the Fourth Proportional to 302,521.80, 453,782.70 and 80,905.80
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Solution
The fourth proportional to 302,521.80, 453,782.70 and 80,905.80 is: 121,358.70
Step by Step Solution
- Step 1: Write the proportion equation
302,521.80 : 453,782.70 = 80,905.80 : x - Step 2: Convert to fraction form
302,521.80/453,782.70 = 80,905.80/x - Step 3: Cross multiply
302,521.80x = 453,782.70 × 80,905.80 - Step 4: Simplify right side
302,521.80x = 36,713,652,369.66 - Step 5: Solve for x
x = 36,713,652,369.66/302,521.80 - Step 6: Final answer
x = 121,358.70
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1.5x scale
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.