Finding the Fourth Proportional to 420,239.13, 579,885.28 and 236,474.49
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Solution
The fourth proportional to 420,239.13, 579,885.28 and 236,474.49 is: 326,309.63
Step by Step Solution
- Step 1: Write the proportion equation
420,239.13 : 579,885.28 = 236,474.49 : x - Step 2: Convert to fraction form
420,239.13/579,885.28 = 236,474.49/x - Step 3: Cross multiply
420,239.13x = 579,885.28 × 236,474.49 - Step 4: Simplify right side
420,239.13x = 137,128,074,168.04 - Step 5: Solve for x
x = 137,128,074,168.04/420,239.13 - Step 6: Final answer
x = 326,309.63
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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.