Finding the Fourth Proportional to 421,138.20, 631,660.80 and 105,595.08
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Solution
The fourth proportional to 421,138.20, 631,660.80 and 105,595.08 is: 158,380.96
Step by Step Solution
- Step 1: Write the proportion equation
421,138.20 : 631,660.80 = 105,595.08 : x - Step 2: Convert to fraction form
421,138.20/631,660.80 = 105,595.08/x - Step 3: Cross multiply
421,138.20x = 631,660.80 × 105,595.08 - Step 4: Simplify right side
421,138.20x = 66,700,272,708.86 - Step 5: Solve for x
x = 66,700,272,708.86/421,138.20 - Step 6: Final answer
x = 158,380.96
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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.