Finding the Fourth Proportional to 216,983,391.12, 299,442,479.40 and 117,864,107.46
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Solution
The fourth proportional to 216,983,391.12, 299,442,479.40 and 117,864,107.46 is: 162,655,401.36
Step by Step Solution
- Step 1: Write the proportion equation
216,983,391.12 : 299,442,479.40 = 117,864,107.46 : x - Step 2: Convert to fraction form
216,983,391.12/299,442,479.40 = 117,864,107.46/x - Step 3: Cross multiply
216,983,391.12x = 299,442,479.40 × 117,864,107.46 - Step 4: Simplify right side
216,983,391.12x = 35,293,520,570,090,432 - Step 5: Solve for x
x = 35,293,520,570,090,432/216,983,391.12 - Step 6: Final answer
x = 162,655,401.36
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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.