Finding the Fourth Proportional to 312,738,568.98, 431,573,484.96 and 173,506,341.42
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Solution
The fourth proportional to 312,738,568.98, 431,573,484.96 and 173,506,341.42 is: 239,435,566.50
Step by Step Solution
- Step 1: Write the proportion equation
312,738,568.98 : 431,573,484.96 = 173,506,341.42 : x - Step 2: Convert to fraction form
312,738,568.98/431,573,484.96 = 173,506,341.42/x - Step 3: Cross multiply
312,738,568.98x = 431,573,484.96 × 173,506,341.42 - Step 4: Simplify right side
312,738,568.98x = 74,880,736,429,288,992 - Step 5: Solve for x
x = 74,880,736,429,288,992/312,738,568.98 - Step 6: Final answer
x = 239,435,566.50
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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.