Finding the Fourth Proportional to 399,638.78, 551,494.99 and 218,346.80
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Solution
The fourth proportional to 399,638.78, 551,494.99 and 218,346.80 is: 301,315.03
Step by Step Solution
- Step 1: Write the proportion equation
399,638.78 : 551,494.99 = 218,346.80 : x - Step 2: Convert to fraction form
399,638.78/551,494.99 = 218,346.80/x - Step 3: Cross multiply
399,638.78x = 551,494.99 × 218,346.80 - Step 4: Simplify right side
399,638.78x = 120,417,167,934.20 - Step 5: Solve for x
x = 120,417,167,934.20/399,638.78 - Step 6: Final answer
x = 301,315.03
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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.