Finding the Fourth Proportional to 393,939,195.90, 590,908,793.85 and 121,393,506.30
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Solution
The fourth proportional to 393,939,195.90, 590,908,793.85 and 121,393,506.30 is: 182,090,259.45
Step by Step Solution
- Step 1: Write the proportion equation
393,939,195.90 : 590,908,793.85 = 121,393,506.30 : x - Step 2: Convert to fraction form
393,939,195.90/590,908,793.85 = 121,393,506.30/x - Step 3: Cross multiply
393,939,195.90x = 590,908,793.85 × 121,393,506.30 - Step 4: Simplify right side
393,939,195.90x = 71,732,490,388,955,376 - Step 5: Solve for x
x = 71,732,490,388,955,376/393,939,195.90 - Step 6: Final answer
x = 182,090,259.45
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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.