Finding the Fourth Proportional to 391,153.23, 539,772.78 and 240,221.07
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Solution
The fourth proportional to 391,153.23, 539,772.78 and 240,221.07 is: 331,493.61
Step by Step Solution
- Step 1: Write the proportion equation
391,153.23 : 539,772.78 = 240,221.07 : x - Step 2: Convert to fraction form
391,153.23/539,772.78 = 240,221.07/x - Step 3: Cross multiply
391,153.23x = 539,772.78 × 240,221.07 - Step 4: Simplify right side
391,153.23x = 129,664,794,768.48 - Step 5: Solve for x
x = 129,664,794,768.48/391,153.23 - Step 6: Final answer
x = 331,493.61
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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.