Finding the Fourth Proportional to 420,990.68, 631,585.60 and 136,680.68
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Solution
The fourth proportional to 420,990.68, 631,585.60 and 136,680.68 is: 205,053.35
Step by Step Solution
- Step 1: Write the proportion equation
420,990.68 : 631,585.60 = 136,680.68 : x - Step 2: Convert to fraction form
420,990.68/631,585.60 = 136,680.68/x - Step 3: Cross multiply
420,990.68x = 631,585.60 × 136,680.68 - Step 4: Simplify right side
420,990.68x = 86,325,549,286.21 - Step 5: Solve for x
x = 86,325,549,286.21/420,990.68 - Step 6: Final answer
x = 205,053.35
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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.