Finding the Fourth Proportional to 439,543,886.20, 659,410,307.70 and 132,866,999.80
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Solution
The fourth proportional to 439,543,886.20, 659,410,307.70 and 132,866,999.80 is: 199,329,058.99
Step by Step Solution
- Step 1: Write the proportion equation
439,543,886.20 : 659,410,307.70 = 132,866,999.80 : x - Step 2: Convert to fraction form
439,543,886.20/659,410,307.70 = 132,866,999.80/x - Step 3: Cross multiply
439,543,886.20x = 659,410,307.70 × 132,866,999.80 - Step 4: Simplify right side
439,543,886.20x = 87,613,869,221,293,840 - Step 5: Solve for x
x = 87,613,869,221,293,840/439,543,886.20 - Step 6: Final answer
x = 199,329,058.99
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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.