Finding the Fourth Proportional to 214,276.80, 321,415.20 and 56,521.20
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Solution
The fourth proportional to 214,276.80, 321,415.20 and 56,521.20 is: 84,781.80
Step by Step Solution
- Step 1: Write the proportion equation
214,276.80 : 321,415.20 = 56,521.20 : x - Step 2: Convert to fraction form
214,276.80/321,415.20 = 56,521.20/x - Step 3: Cross multiply
214,276.80x = 321,415.20 × 56,521.20 - Step 4: Simplify right side
214,276.80x = 18,166,772,802.24 - Step 5: Solve for x
x = 18,166,772,802.24/214,276.80 - Step 6: Final answer
x = 84,781.80
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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.