Finding the Fourth Proportional to 418,682.94, 627,740.13 and 213,012.09
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Solution
The fourth proportional to 418,682.94, 627,740.13 and 213,012.09 is: 319,373.50
Step by Step Solution
- Step 1: Write the proportion equation
418,682.94 : 627,740.13 = 213,012.09 : x - Step 2: Convert to fraction form
418,682.94/627,740.13 = 213,012.09/x - Step 3: Cross multiply
418,682.94x = 627,740.13 × 213,012.09 - Step 4: Simplify right side
418,682.94x = 133,716,237,068.17 - Step 5: Solve for x
x = 133,716,237,068.17/418,682.94 - Step 6: Final answer
x = 319,373.50
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.