Finding the Fourth Proportional to 239,145,904.20, 358,718,856.30 and 218,738,569.80
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Solution
The fourth proportional to 239,145,904.20, 358,718,856.30 and 218,738,569.80 is: 328,107,854.70
Step by Step Solution
- Step 1: Write the proportion equation
239,145,904.20 : 358,718,856.30 = 218,738,569.80 : x - Step 2: Convert to fraction form
239,145,904.20/358,718,856.30 = 218,738,569.80/x - Step 3: Cross multiply
239,145,904.20x = 358,718,856.30 × 218,738,569.80 - Step 4: Simplify right side
239,145,904.20x = 78,465,649,587,353,728 - Step 5: Solve for x
x = 78,465,649,587,353,728/239,145,904.20 - Step 6: Final answer
x = 328,107,854.70
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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.