Finding the Fourth Proportional to 317,660,805.20, 476,491,207.80 and 145,473,921.20
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Solution
The fourth proportional to 317,660,805.20, 476,491,207.80 and 145,473,921.20 is: 218,210,881.80
Step by Step Solution
- Step 1: Write the proportion equation
317,660,805.20 : 476,491,207.80 = 145,473,921.20 : x - Step 2: Convert to fraction form
317,660,805.20/476,491,207.80 = 145,473,921.20/x - Step 3: Cross multiply
317,660,805.20x = 476,491,207.80 × 145,473,921.20 - Step 4: Simplify right side
317,660,805.20x = 69,317,044,415,990,024 - Step 5: Solve for x
x = 69,317,044,415,990,024/317,660,805.20 - Step 6: Final answer
x = 218,210,881.80
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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.