Finding the Fourth Proportional to 385,749.90, 578,122.19 and 214,964.81
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Solution
The fourth proportional to 385,749.90, 578,122.19 and 214,964.81 is: 322,167.10
Step by Step Solution
- Step 1: Write the proportion equation
385,749.90 : 578,122.19 = 214,964.81 : x - Step 2: Convert to fraction form
385,749.90/578,122.19 = 214,964.81/x - Step 3: Cross multiply
385,749.90x = 578,122.19 × 214,964.81 - Step 4: Simplify right side
385,749.90x = 124,275,926,730.13 - Step 5: Solve for x
x = 124,275,926,730.13/385,749.90 - Step 6: Final answer
x = 322,167.10
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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.