Finding the Fourth Proportional to 221,572.42, 305,768.36 and 120,970.42
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Solution
The fourth proportional to 221,572.42, 305,768.36 and 120,970.42 is: 166,938.32
Step by Step Solution
- Step 1: Write the proportion equation
221,572.42 : 305,768.36 = 120,970.42 : x - Step 2: Convert to fraction form
221,572.42/305,768.36 = 120,970.42/x - Step 3: Cross multiply
221,572.42x = 305,768.36 × 120,970.42 - Step 4: Simplify right side
221,572.42x = 36,988,926,931.91 - Step 5: Solve for x
x = 36,988,926,931.91/221,572.42 - Step 6: Final answer
x = 166,938.32
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1.5x scale
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.