Finding the Fourth Proportional to 386,983.98, 580,479.21 and 106,516.62
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Solution
The fourth proportional to 386,983.98, 580,479.21 and 106,516.62 is: 159,775.82
Step by Step Solution
- Step 1: Write the proportion equation
386,983.98 : 580,479.21 = 106,516.62 : x - Step 2: Convert to fraction form
386,983.98/580,479.21 = 106,516.62/x - Step 3: Cross multiply
386,983.98x = 580,479.21 × 106,516.62 - Step 4: Simplify right side
386,983.98x = 61,830,683,429.47 - Step 5: Solve for x
x = 61,830,683,429.47/386,983.98 - Step 6: Final answer
x = 159,775.82
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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.