Finding the Fourth Proportional to 331,776,276.80, 497,664,415.20 and 211,142,523.20
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Solution
The fourth proportional to 331,776,276.80, 497,664,415.20 and 211,142,523.20 is: 316,713,784.80
Step by Step Solution
- Step 1: Write the proportion equation
331,776,276.80 : 497,664,415.20 = 211,142,523.20 : x - Step 2: Convert to fraction form
331,776,276.80/497,664,415.20 = 211,142,523.20/x - Step 3: Cross multiply
331,776,276.80x = 497,664,415.20 × 211,142,523.20 - Step 4: Simplify right side
331,776,276.80x = 105,078,120,332,180,432 - Step 5: Solve for x
x = 105,078,120,332,180,432/331,776,276.80 - Step 6: Final answer
x = 316,713,784.80
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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.