Finding the Fourth Proportional to 317,165,719.68, 437,769,147.60 and 216,734,830.56
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Solution
The fourth proportional to 317,165,719.68, 437,769,147.60 and 216,734,830.56 is: 299,149,044.62
Step by Step Solution
- Step 1: Write the proportion equation
317,165,719.68 : 437,769,147.60 = 216,734,830.56 : x - Step 2: Convert to fraction form
317,165,719.68/437,769,147.60 = 216,734,830.56/x - Step 3: Cross multiply
317,165,719.68x = 437,769,147.60 × 216,734,830.56 - Step 4: Simplify right side
317,165,719.68x = 94,879,822,029,481,632 - Step 5: Solve for x
x = 94,879,822,029,481,632/317,165,719.68 - Step 6: Final answer
x = 299,149,044.62
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1.5x scale
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.