Finding the Fourth Proportional to 399,318.21, 551,054.95 and 218,029.58
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Solution
The fourth proportional to 399,318.21, 551,054.95 and 218,029.58 is: 300,878.54
Step by Step Solution
- Step 1: Write the proportion equation
399,318.21 : 551,054.95 = 218,029.58 : x - Step 2: Convert to fraction form
399,318.21/551,054.95 = 218,029.58/x - Step 3: Cross multiply
399,318.21x = 551,054.95 × 218,029.58 - Step 4: Simplify right side
399,318.21x = 120,146,279,305.42 - Step 5: Solve for x
x = 120,146,279,305.42/399,318.21 - Step 6: Final answer
x = 300,878.54
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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.