Finding the Fourth Proportional to 403,012.13, 556,156.71 and 221,720.17
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Solution
The fourth proportional to 403,012.13, 556,156.71 and 221,720.17 is: 305,973.82
Step by Step Solution
- Step 1: Write the proportion equation
403,012.13 : 556,156.71 = 221,720.17 : x - Step 2: Convert to fraction form
403,012.13/556,156.71 = 221,720.17/x - Step 3: Cross multiply
403,012.13x = 556,156.71 × 221,720.17 - Step 4: Simplify right side
403,012.13x = 123,311,158,897.45 - Step 5: Solve for x
x = 123,311,158,897.45/403,012.13 - Step 6: Final answer
x = 305,973.82
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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.