Finding the Fourth Proportional to 280,722.40, 387,397.92 and 153,397.99
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Solution
The fourth proportional to 280,722.40, 387,397.92 and 153,397.99 is: 211,689.78
Step by Step Solution
- Step 1: Write the proportion equation
280,722.40 : 387,397.92 = 153,397.99 : x - Step 2: Convert to fraction form
280,722.40/387,397.92 = 153,397.99/x - Step 3: Cross multiply
280,722.40x = 387,397.92 × 153,397.99 - Step 4: Simplify right side
280,722.40x = 59,426,062,258.18 - Step 5: Solve for x
x = 59,426,062,258.18/280,722.40 - Step 6: Final answer
x = 211,689.78
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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.