Finding the Fourth Proportional to 330,278,311.20, 495,417,466.80 and 136,089,769.80
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Solution
The fourth proportional to 330,278,311.20, 495,417,466.80 and 136,089,769.80 is: 204,134,654.70
Step by Step Solution
- Step 1: Write the proportion equation
330,278,311.20 : 495,417,466.80 = 136,089,769.80 : x - Step 2: Convert to fraction form
330,278,311.20/495,417,466.80 = 136,089,769.80/x - Step 3: Cross multiply
330,278,311.20x = 495,417,466.80 × 136,089,769.80 - Step 4: Simplify right side
330,278,311.20x = 67,421,249,011,711,152 - Step 5: Solve for x
x = 67,421,249,011,711,152/330,278,311.20 - Step 6: Final answer
x = 204,134,654.70
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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.