Finding the Fourth Proportional to 391,064.63, 539,669.18 and 212,216.63
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Solution
The fourth proportional to 391,064.63, 539,669.18 and 212,216.63 is: 292,858.94
Step by Step Solution
- Step 1: Write the proportion equation
391,064.63 : 539,669.18 = 212,216.63 : x - Step 2: Convert to fraction form
391,064.63/539,669.18 = 212,216.63/x - Step 3: Cross multiply
391,064.63x = 539,669.18 × 212,216.63 - Step 4: Simplify right side
391,064.63x = 114,526,772,526.66 - Step 5: Solve for x
x = 114,526,772,526.66/391,064.63 - Step 6: Final answer
x = 292,858.94
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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.