Finding the Fourth Proportional to 388,587.60, 536,261.28 and 218,827.68
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Solution
The fourth proportional to 388,587.60, 536,261.28 and 218,827.68 is: 301,988.05
Step by Step Solution
- Step 1: Write the proportion equation
388,587.60 : 536,261.28 = 218,827.68 : x - Step 2: Convert to fraction form
388,587.60/536,261.28 = 218,827.68/x - Step 3: Cross multiply
388,587.60x = 536,261.28 × 218,827.68 - Step 4: Simplify right side
388,587.60x = 117,348,811,776.23 - Step 5: Solve for x
x = 117,348,811,776.23/388,587.60 - Step 6: Final answer
x = 301,988.05
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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.