Finding the Fourth Proportional to 391,118.84, 539,744.24 and 212,270.84
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Solution
The fourth proportional to 391,118.84, 539,744.24 and 212,270.84 is: 292,933.89
Step by Step Solution
- Step 1: Write the proportion equation
391,118.84 : 539,744.24 = 212,270.84 : x - Step 2: Convert to fraction form
391,118.84/539,744.24 = 212,270.84/x - Step 3: Cross multiply
391,118.84x = 539,744.24 × 212,270.84 - Step 4: Simplify right side
391,118.84x = 114,571,963,209.96 - Step 5: Solve for x
x = 114,571,963,209.96/391,118.84 - Step 6: Final answer
x = 292,933.89
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1.5x scale
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.