Finding the Fourth Proportional to 420,031.68, 579,620.91 and 238,718.44
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Solution
The fourth proportional to 420,031.68, 579,620.91 and 238,718.44 is: 329,418.49
Step by Step Solution
- Step 1: Write the proportion equation
420,031.68 : 579,620.91 = 238,718.44 : x - Step 2: Convert to fraction form
420,031.68/579,620.91 = 238,718.44/x - Step 3: Cross multiply
420,031.68x = 579,620.91 × 238,718.44 - Step 4: Simplify right side
420,031.68x = 138,366,201,046.30 - Step 5: Solve for x
x = 138,366,201,046.30/420,031.68 - Step 6: Final answer
x = 329,418.49
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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.