Finding the Fourth Proportional to 420,257.67, 579,931.97 and 239,013.69
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Solution
The fourth proportional to 420,257.67, 579,931.97 and 239,013.69 is: 329,825.46
Step by Step Solution
- Step 1: Write the proportion equation
420,257.67 : 579,931.97 = 239,013.69 : x - Step 2: Convert to fraction form
420,257.67/579,931.97 = 239,013.69/x - Step 3: Cross multiply
420,257.67x = 579,931.97 × 239,013.69 - Step 4: Simplify right side
420,257.67x = 138,611,678,903.60 - Step 5: Solve for x
x = 138,611,678,903.60/420,257.67 - Step 6: Final answer
x = 329,825.46
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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.