Finding the Fourth Proportional to 306,220,267.80, 459,330,401.70 and 220,126,825.80
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Solution
The fourth proportional to 306,220,267.80, 459,330,401.70 and 220,126,825.80 is: 330,190,238.70
Step by Step Solution
- Step 1: Write the proportion equation
306,220,267.80 : 459,330,401.70 = 220,126,825.80 : x - Step 2: Convert to fraction form
306,220,267.80/459,330,401.70 = 220,126,825.80/x - Step 3: Cross multiply
306,220,267.80x = 459,330,401.70 × 220,126,825.80 - Step 4: Simplify right side
306,220,267.80x = 101,110,943,319,659,920 - Step 5: Solve for x
x = 101,110,943,319,659,920/306,220,267.80 - Step 6: Final answer
x = 330,190,238.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.