Finding the Fourth Proportional to 520,197.19, 780,295.78 and 146,220.19
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Solution
The fourth proportional to 520,197.19, 780,295.78 and 146,220.19 is: 219,330.28
Step by Step Solution
- Step 1: Write the proportion equation
520,197.19 : 780,295.78 = 146,220.19 : x - Step 2: Convert to fraction form
520,197.19/780,295.78 = 146,220.19/x - Step 3: Cross multiply
520,197.19x = 780,295.78 × 146,220.19 - Step 4: Simplify right side
520,197.19x = 114,094,995,439.83 - Step 5: Solve for x
x = 114,094,995,439.83/520,197.19 - Step 6: Final answer
x = 219,330.28
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Double scale
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Similar ratio
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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.