Finding the Fourth Proportional to 420,227.12, 579,940.82 and 238,955.92
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Solution
The fourth proportional to 420,227.12, 579,940.82 and 238,955.92 is: 329,774.75
Step by Step Solution
- Step 1: Write the proportion equation
420,227.12 : 579,940.82 = 238,955.92 : x - Step 2: Convert to fraction form
420,227.12/579,940.82 = 238,955.92/x - Step 3: Cross multiply
420,227.12x = 579,940.82 × 238,955.92 - Step 4: Simplify right side
420,227.12x = 138,580,292,188.65 - Step 5: Solve for x
x = 138,580,292,188.65/420,227.12 - Step 6: Final answer
x = 329,774.75
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1.5x scale
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.