Finding the Fourth Proportional to 298,518,276.80, 447,777,415.20 and 272,690,244.20
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Solution
The fourth proportional to 298,518,276.80, 447,777,415.20 and 272,690,244.20 is: 409,035,366.30
Step by Step Solution
- Step 1: Write the proportion equation
298,518,276.80 : 447,777,415.20 = 272,690,244.20 : x - Step 2: Convert to fraction form
298,518,276.80/447,777,415.20 = 272,690,244.20/x - Step 3: Cross multiply
298,518,276.80x = 447,777,415.20 × 272,690,244.20 - Step 4: Simplify right side
298,518,276.80x = 122,104,532,698,132,784 - Step 5: Solve for x
x = 122,104,532,698,132,784/298,518,276.80 - Step 6: Final answer
x = 409,035,366.30
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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.