Finding the Fourth Proportional to 640,143.44, 960,331.80 and 219,461.84
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Solution
The fourth proportional to 640,143.44, 960,331.80 and 219,461.84 is: 329,232.75
Step by Step Solution
- Step 1: Write the proportion equation
640,143.44 : 960,331.80 = 219,461.84 : x - Step 2: Convert to fraction form
640,143.44/960,331.80 = 219,461.84/x - Step 3: Cross multiply
640,143.44x = 960,331.80 × 219,461.84 - Step 4: Simplify right side
640,143.44x = 210,756,183,838.51 - Step 5: Solve for x
x = 210,756,183,838.51/640,143.44 - Step 6: Final answer
x = 329,232.75
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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.