Finding the Fourth Proportional to 330,276,805.20, 495,415,207.80 and 221,437,688.40
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Solution
The fourth proportional to 330,276,805.20, 495,415,207.80 and 221,437,688.40 is: 332,156,532.60
Step by Step Solution
- Step 1: Write the proportion equation
330,276,805.20 : 495,415,207.80 = 221,437,688.40 : x - Step 2: Convert to fraction form
330,276,805.20/495,415,207.80 = 221,437,688.40/x - Step 3: Cross multiply
330,276,805.20x = 495,415,207.80 × 221,437,688.40 - Step 4: Simplify right side
330,276,805.20x = 109,703,598,413,437,648 - Step 5: Solve for x
x = 109,703,598,413,437,648/330,276,805.20 - Step 6: Final answer
x = 332,156,532.60
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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.