Finding the Fourth Proportional to 260,730,198.45, 391,095,297.68 and 256,699,120.05
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Solution
The fourth proportional to 260,730,198.45, 391,095,297.68 and 256,699,120.05 is: 385,048,680.08
Step by Step Solution
- Step 1: Write the proportion equation
260,730,198.45 : 391,095,297.68 = 256,699,120.05 : x - Step 2: Convert to fraction form
260,730,198.45/391,095,297.68 = 256,699,120.05/x - Step 3: Cross multiply
260,730,198.45x = 391,095,297.68 × 256,699,120.05 - Step 4: Simplify right side
260,730,198.45x = 100,393,818,768,865,312 - Step 5: Solve for x
x = 100,393,818,768,865,312/260,730,198.45 - Step 6: Final answer
x = 385,048,680.08
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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.