Finding the Fourth Proportional to 391,116.08, 539,740.41 and 212,268.08
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Solution
The fourth proportional to 391,116.08, 539,740.41 and 212,268.08 is: 292,930.07
Step by Step Solution
- Step 1: Write the proportion equation
391,116.08 : 539,740.41 = 212,268.08 : x - Step 2: Convert to fraction form
391,116.08/539,740.41 = 212,268.08/x - Step 3: Cross multiply
391,116.08x = 539,740.41 × 212,268.08 - Step 4: Simplify right side
391,116.08x = 114,569,660,529.11 - Step 5: Solve for x
x = 114,569,660,529.11/391,116.08 - Step 6: Final answer
x = 292,930.07
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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.