Finding the Fourth Proportional to 385,604,492.44, 532,132,272.18 and 209,390,918.68
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Solution
The fourth proportional to 385,604,492.44, 532,132,272.18 and 209,390,918.68 is: 288,958,421.17
Step by Step Solution
- Step 1: Write the proportion equation
385,604,492.44 : 532,132,272.18 = 209,390,918.68 : x - Step 2: Convert to fraction form
385,604,492.44/532,132,272.18 = 209,390,918.68/x - Step 3: Cross multiply
385,604,492.44x = 532,132,272.18 × 209,390,918.68 - Step 4: Simplify right side
385,604,492.44x = 111,423,665,331,046,016 - Step 5: Solve for x
x = 111,423,665,331,046,016/385,604,492.44 - Step 6: Final answer
x = 288,958,421.17
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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.