Finding the Fourth Proportional to 430,078.53, 644,714.90 and 145,569.99
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Solution
The fourth proportional to 430,078.53, 644,714.90 and 145,569.99 is: 218,218.61
Step by Step Solution
- Step 1: Write the proportion equation
430,078.53 : 644,714.90 = 145,569.99 : x - Step 2: Convert to fraction form
430,078.53/644,714.90 = 145,569.99/x - Step 3: Cross multiply
430,078.53x = 644,714.90 × 145,569.99 - Step 4: Simplify right side
430,078.53x = 93,851,138,322.28 - Step 5: Solve for x
x = 93,851,138,322.28/430,078.53 - Step 6: Final answer
x = 218,218.61
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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.