Finding the Fourth Proportional to 386,983.36, 580,478.28 and 106,516.00
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Solution
The fourth proportional to 386,983.36, 580,478.28 and 106,516.00 is: 159,774.88
Step by Step Solution
- Step 1: Write the proportion equation
386,983.36 : 580,478.28 = 106,516.00 : x - Step 2: Convert to fraction form
386,983.36/580,478.28 = 106,516.00/x - Step 3: Cross multiply
386,983.36x = 580,478.28 × 106,516.00 - Step 4: Simplify right side
386,983.36x = 61,830,221,037.51 - Step 5: Solve for x
x = 61,830,221,037.51/386,983.36 - Step 6: Final answer
x = 159,774.88
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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.