Finding the Fourth Proportional to 279,097.80, 418,646.70 and 139,129.80
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Solution
The fourth proportional to 279,097.80, 418,646.70 and 139,129.80 is: 208,694.70
Step by Step Solution
- Step 1: Write the proportion equation
279,097.80 : 418,646.70 = 139,129.80 : x - Step 2: Convert to fraction form
279,097.80/418,646.70 = 139,129.80/x - Step 3: Cross multiply
279,097.80x = 418,646.70 × 139,129.80 - Step 4: Simplify right side
279,097.80x = 58,246,231,641.66 - Step 5: Solve for x
x = 58,246,231,641.66/279,097.80 - Step 6: Final answer
x = 208,694.70
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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.