Finding the Fourth Proportional to 272,804,751.20, 409,207,126.80 and 163,965,634.40
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Solution
The fourth proportional to 272,804,751.20, 409,207,126.80 and 163,965,634.40 is: 245,948,451.60
Step by Step Solution
- Step 1: Write the proportion equation
272,804,751.20 : 409,207,126.80 = 163,965,634.40 : x - Step 2: Convert to fraction form
272,804,751.20/409,207,126.80 = 163,965,634.40/x - Step 3: Cross multiply
272,804,751.20x = 409,207,126.80 × 163,965,634.40 - Step 4: Simplify right side
272,804,751.20x = 67,095,906,146,763,248 - Step 5: Solve for x
x = 67,095,906,146,763,248/272,804,751.20 - Step 6: Final answer
x = 245,948,451.60
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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.