Finding the Fourth Proportional to 330,000.80, 495,001.20 and 217,807.70
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Solution
The fourth proportional to 330,000.80, 495,001.20 and 217,807.70 is: 326,711.55
Step by Step Solution
- Step 1: Write the proportion equation
330,000.80 : 495,001.20 = 217,807.70 : x - Step 2: Convert to fraction form
330,000.80/495,001.20 = 217,807.70/x - Step 3: Cross multiply
330,000.80x = 495,001.20 × 217,807.70 - Step 4: Simplify right side
330,000.80x = 107,815,072,869.24 - Step 5: Solve for x
x = 107,815,072,869.24/330,000.80 - Step 6: Final answer
x = 326,711.55
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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.