Finding the Fourth Proportional to 391,060.95, 539,664.11 and 212,212.95
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Solution
The fourth proportional to 391,060.95, 539,664.11 and 212,212.95 is: 292,853.87
Step by Step Solution
- Step 1: Write the proportion equation
391,060.95 : 539,664.11 = 212,212.95 : x - Step 2: Convert to fraction form
391,060.95/539,664.11 = 212,212.95/x - Step 3: Cross multiply
391,060.95x = 539,664.11 × 212,212.95 - Step 4: Simplify right side
391,060.95x = 114,523,712,792.23 - Step 5: Solve for x
x = 114,523,712,792.23/391,060.95 - Step 6: Final answer
x = 292,853.87
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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.