Finding the Fourth Proportional to 330,276,707.20, 495,415,060.80 and 221,437,590.40
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Solution
The fourth proportional to 330,276,707.20, 495,415,060.80 and 221,437,590.40 is: 332,156,385.60
Step by Step Solution
- Step 1: Write the proportion equation
330,276,707.20 : 495,415,060.80 = 221,437,590.40 : x - Step 2: Convert to fraction form
330,276,707.20/495,415,060.80 = 221,437,590.40/x - Step 3: Cross multiply
330,276,707.20x = 495,415,060.80 × 221,437,590.40 - Step 4: Simplify right side
330,276,707.20x = 109,703,517,311,421,504 - Step 5: Solve for x
x = 109,703,517,311,421,504/330,276,707.20 - Step 6: Final answer
x = 332,156,385.60
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1.5x scale
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.