Finding the Fourth Proportional to 280,475,343.84, 420,758,220.24 and 86,386,694.88
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Solution
The fourth proportional to 280,475,343.84, 420,758,220.24 and 86,386,694.88 is: 129,593,965.35
Step by Step Solution
- Step 1: Write the proportion equation
280,475,343.84 : 420,758,220.24 = 86,386,694.88 : x - Step 2: Convert to fraction form
280,475,343.84/420,758,220.24 = 86,386,694.88/x - Step 3: Cross multiply
280,475,343.84x = 420,758,220.24 × 86,386,694.88 - Step 4: Simplify right side
280,475,343.84x = 36,347,911,990,124,720 - Step 5: Solve for x
x = 36,347,911,990,124,720/280,475,343.84 - Step 6: Final answer
x = 129,593,965.35
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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.