Finding the Fourth Proportional to 647,743.41, 971,587.58 and 221,317.47
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Solution
The fourth proportional to 647,743.41, 971,587.58 and 221,317.47 is: 331,966.80
Step by Step Solution
- Step 1: Write the proportion equation
647,743.41 : 971,587.58 = 221,317.47 : x - Step 2: Convert to fraction form
647,743.41/971,587.58 = 221,317.47/x - Step 3: Cross multiply
647,743.41x = 971,587.58 × 221,317.47 - Step 4: Simplify right side
647,743.41x = 215,029,303,982.44 - Step 5: Solve for x
x = 215,029,303,982.44/647,743.41 - Step 6: Final answer
x = 331,966.80
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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.