Finding the Fourth Proportional to 299,088,916.47, 448,791,437.90 and 212,211,889.80
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Solution
The fourth proportional to 299,088,916.47, 448,791,437.90 and 212,211,889.80 is: 318,429,984.92
Step by Step Solution
- Step 1: Write the proportion equation
299,088,916.47 : 448,791,437.90 = 212,211,889.80 : x - Step 2: Convert to fraction form
299,088,916.47/448,791,437.90 = 212,211,889.80/x - Step 3: Cross multiply
299,088,916.47x = 448,791,437.90 × 212,211,889.80 - Step 4: Simplify right side
299,088,916.47x = 95,238,879,160,574,368 - Step 5: Solve for x
x = 95,238,879,160,574,368/299,088,916.47 - Step 6: Final answer
x = 318,429,984.92
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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.