Finding the Fourth Proportional to 280,866,475.80, 421,299,713.70 and 246,854,251.80
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Solution
The fourth proportional to 280,866,475.80, 421,299,713.70 and 246,854,251.80 is: 370,281,377.70
Step by Step Solution
- Step 1: Write the proportion equation
280,866,475.80 : 421,299,713.70 = 246,854,251.80 : x - Step 2: Convert to fraction form
280,866,475.80/421,299,713.70 = 246,854,251.80/x - Step 3: Cross multiply
280,866,475.80x = 421,299,713.70 × 246,854,251.80 - Step 4: Simplify right side
280,866,475.80x = 103,999,625,608,967,712 - Step 5: Solve for x
x = 103,999,625,608,967,712/280,866,475.80 - Step 6: Final answer
x = 370,281,377.70
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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.