Finding the Fourth Proportional to 426,266.88, 639,385.20 and 106,420.56
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Solution
The fourth proportional to 426,266.88, 639,385.20 and 106,420.56 is: 159,627.07
Step by Step Solution
- Step 1: Write the proportion equation
426,266.88 : 639,385.20 = 106,420.56 : x - Step 2: Convert to fraction form
426,266.88/639,385.20 = 106,420.56/x - Step 3: Cross multiply
426,266.88x = 639,385.20 × 106,420.56 - Step 4: Simplify right side
426,266.88x = 68,043,731,039.71 - Step 5: Solve for x
x = 68,043,731,039.71/426,266.88 - Step 6: Final answer
x = 159,627.07
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.