Finding the Fourth Proportional to 328,913.28, 493,402.21 and 136,748.02
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Solution
The fourth proportional to 328,913.28, 493,402.21 and 136,748.02 is: 205,135.46
Step by Step Solution
- Step 1: Write the proportion equation
328,913.28 : 493,402.21 = 136,748.02 : x - Step 2: Convert to fraction form
328,913.28/493,402.21 = 136,748.02/x - Step 3: Cross multiply
328,913.28x = 493,402.21 × 136,748.02 - Step 4: Simplify right side
328,913.28x = 67,471,776,403.18 - Step 5: Solve for x
x = 67,471,776,403.18/328,913.28 - Step 6: Final answer
x = 205,135.46
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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.