Finding the Fourth Proportional to 370,235.20, 555,352.80 and 212,771.20
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Solution
The fourth proportional to 370,235.20, 555,352.80 and 212,771.20 is: 319,156.80
Step by Step Solution
- Step 1: Write the proportion equation
370,235.20 : 555,352.80 = 212,771.20 : x - Step 2: Convert to fraction form
370,235.20/555,352.80 = 212,771.20/x - Step 3: Cross multiply
370,235.20x = 555,352.80 × 212,771.20 - Step 4: Simplify right side
370,235.20x = 118,163,081,679.36 - Step 5: Solve for x
x = 118,163,081,679.36/370,235.20 - Step 6: Final answer
x = 319,156.80
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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.