Finding the Fourth Proportional to 470,207.70, 705,311.55 and 137,783.70
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Solution
The fourth proportional to 470,207.70, 705,311.55 and 137,783.70 is: 206,675.55
Step by Step Solution
- Step 1: Write the proportion equation
470,207.70 : 705,311.55 = 137,783.70 : x - Step 2: Convert to fraction form
470,207.70/705,311.55 = 137,783.70/x - Step 3: Cross multiply
470,207.70x = 705,311.55 × 137,783.70 - Step 4: Simplify right side
470,207.70x = 97,180,435,011.74 - Step 5: Solve for x
x = 97,180,435,011.74/470,207.70 - Step 6: Final answer
x = 206,675.55
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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.