Finding the Fourth Proportional to 299,088,917.65, 448,791,439.69 and 212,211,890.99
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Solution
The fourth proportional to 299,088,917.65, 448,791,439.69 and 212,211,890.99 is: 318,429,986.72
Step by Step Solution
- Step 1: Write the proportion equation
299,088,917.65 : 448,791,439.69 = 212,211,890.99 : x - Step 2: Convert to fraction form
299,088,917.65/448,791,439.69 = 212,211,890.99/x - Step 3: Cross multiply
299,088,917.65x = 448,791,439.69 × 212,211,890.99 - Step 4: Simplify right side
299,088,917.65x = 95,238,880,076,443,728 - Step 5: Solve for x
x = 95,238,880,076,443,728/299,088,917.65 - Step 6: Final answer
x = 318,429,986.72
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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.