Finding the Fourth Proportional to 311,583,743.84, 429,840,783.60 and 201,610,989.92
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Solution
The fourth proportional to 311,583,743.84, 429,840,783.60 and 201,610,989.92 is: 278,129,483.98
Step by Step Solution
- Step 1: Write the proportion equation
311,583,743.84 : 429,840,783.60 = 201,610,989.92 : x - Step 2: Convert to fraction form
311,583,743.84/429,840,783.60 = 201,610,989.92/x - Step 3: Cross multiply
311,583,743.84x = 429,840,783.60 × 201,610,989.92 - Step 4: Simplify right side
311,583,743.84x = 86,660,625,889,584,496 - Step 5: Solve for x
x = 86,660,625,889,584,496/311,583,743.84 - Step 6: Final answer
x = 278,129,483.98
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.