Finding the Fourth Proportional to 420,253.92, 579,926.79 and 239,009.94
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Solution
The fourth proportional to 420,253.92, 579,926.79 and 239,009.94 is: 329,820.28
Step by Step Solution
- Step 1: Write the proportion equation
420,253.92 : 579,926.79 = 239,009.94 : x - Step 2: Convert to fraction form
420,253.92/579,926.79 = 239,009.94/x - Step 3: Cross multiply
420,253.92x = 579,926.79 × 239,009.94 - Step 4: Simplify right side
420,253.92x = 138,608,267,282.29 - Step 5: Solve for x
x = 138,608,267,282.29/420,253.92 - Step 6: Final answer
x = 329,820.28
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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.