Finding the Fourth Proportional to 313,562.79, 432,550.80 and 198,638.70
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Solution
The fourth proportional to 313,562.79, 432,550.80 and 198,638.70 is: 274,016.34
Step by Step Solution
- Step 1: Write the proportion equation
313,562.79 : 432,550.80 = 198,638.70 : x - Step 2: Convert to fraction form
313,562.79/432,550.80 = 198,638.70/x - Step 3: Cross multiply
313,562.79x = 432,550.80 × 198,638.70 - Step 4: Simplify right side
313,562.79x = 85,921,328,595.96 - Step 5: Solve for x
x = 85,921,328,595.96/313,562.79 - Step 6: Final answer
x = 274,016.34
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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.