Finding the Fourth Proportional to 399,317.71, 551,054.26 and 218,029.08
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Solution
The fourth proportional to 399,317.71, 551,054.26 and 218,029.08 is: 300,877.85
Step by Step Solution
- Step 1: Write the proportion equation
399,317.71 : 551,054.26 = 218,029.08 : x - Step 2: Convert to fraction form
399,317.71/551,054.26 = 218,029.08/x - Step 3: Cross multiply
399,317.71x = 551,054.26 × 218,029.08 - Step 4: Simplify right side
399,317.71x = 120,145,853,337.88 - Step 5: Solve for x
x = 120,145,853,337.88/399,317.71 - Step 6: Final answer
x = 300,877.85
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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.