Finding the Fourth Proportional to 215,900,017.05, 297,916,419.36 and 121,808,678.65
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Solution
The fourth proportional to 215,900,017.05, 297,916,419.36 and 121,808,678.65 is: 168,081,530.92
Step by Step Solution
- Step 1: Write the proportion equation
215,900,017.05 : 297,916,419.36 = 121,808,678.65 : x - Step 2: Convert to fraction form
215,900,017.05/297,916,419.36 = 121,808,678.65/x - Step 3: Cross multiply
215,900,017.05x = 297,916,419.36 × 121,808,678.65 - Step 4: Simplify right side
215,900,017.05x = 36,288,805,390,380,880 - Step 5: Solve for x
x = 36,288,805,390,380,880/215,900,017.05 - Step 6: Final answer
x = 168,081,530.92
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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.