Finding the Fourth Proportional to 499,237.49, 688,961.29 and 305,641.42
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Solution
The fourth proportional to 499,237.49, 688,961.29 and 305,641.42 is: 421,793.45
Step by Step Solution
- Step 1: Write the proportion equation
499,237.49 : 688,961.29 = 305,641.42 : x - Step 2: Convert to fraction form
499,237.49/688,961.29 = 305,641.42/x - Step 3: Cross multiply
499,237.49x = 688,961.29 × 305,641.42 - Step 4: Simplify right side
499,237.49x = 210,575,103,555.83 - Step 5: Solve for x
x = 210,575,103,555.83/499,237.49 - Step 6: Final answer
x = 421,793.45
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.