Finding the Fourth Proportional to 318,890,797.84, 440,069,297.41 and 172,213,081.84
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Solution
The fourth proportional to 318,890,797.84, 440,069,297.41 and 172,213,081.84 is: 237,654,050.99
Step by Step Solution
- Step 1: Write the proportion equation
318,890,797.84 : 440,069,297.41 = 172,213,081.84 : x - Step 2: Convert to fraction form
318,890,797.84/440,069,297.41 = 172,213,081.84/x - Step 3: Cross multiply
318,890,797.84x = 440,069,297.41 × 172,213,081.84 - Step 4: Simplify right side
318,890,797.84x = 75,785,689,930,139,632 - Step 5: Solve for x
x = 75,785,689,930,139,632/318,890,797.84 - Step 6: Final answer
x = 237,654,050.99
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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.