Finding the Fourth Proportional to 298,774.40, 447,643.20 and 193,539.20
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Solution
The fourth proportional to 298,774.40, 447,643.20 and 193,539.20 is: 289,972.99
Step by Step Solution
- Step 1: Write the proportion equation
298,774.40 : 447,643.20 = 193,539.20 : x - Step 2: Convert to fraction form
298,774.40/447,643.20 = 193,539.20/x - Step 3: Cross multiply
298,774.40x = 447,643.20 × 193,539.20 - Step 4: Simplify right side
298,774.40x = 86,636,506,813.44 - Step 5: Solve for x
x = 86,636,506,813.44/298,774.40 - Step 6: Final answer
x = 289,972.99
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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.