Finding the Fourth Proportional to 209,564,203.20, 287,103,982.80 and 201,709,795.20
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Solution
The fourth proportional to 209,564,203.20, 287,103,982.80 and 201,709,795.20 is: 276,343,405.45
Step by Step Solution
- Step 1: Write the proportion equation
209,564,203.20 : 287,103,982.80 = 201,709,795.20 : x - Step 2: Convert to fraction form
209,564,203.20/287,103,982.80 = 201,709,795.20/x - Step 3: Cross multiply
209,564,203.20x = 287,103,982.80 × 201,709,795.20 - Step 4: Simplify right side
209,564,203.20x = 57,911,685,571,692,320 - Step 5: Solve for x
x = 57,911,685,571,692,320/209,564,203.20 - Step 6: Final answer
x = 276,343,405.45
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.