Finding the Fourth Proportional to 403,170.80, 556,412.99 and 221,919.53
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Solution
The fourth proportional to 403,170.80, 556,412.99 and 221,919.53 is: 306,269.47
Step by Step Solution
- Step 1: Write the proportion equation
403,170.80 : 556,412.99 = 221,919.53 : x - Step 2: Convert to fraction form
403,170.80/556,412.99 = 221,919.53/x - Step 3: Cross multiply
403,170.80x = 556,412.99 × 221,919.53 - Step 4: Simplify right side
403,170.80x = 123,478,905,335.03 - Step 5: Solve for x
x = 123,478,905,335.03/403,170.80 - Step 6: Final answer
x = 306,269.47
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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.