Finding the Fourth Proportional to 391,430.44, 540,176.07 and 219,348.79
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Solution
The fourth proportional to 391,430.44, 540,176.07 and 219,348.79 is: 302,702.49
Step by Step Solution
- Step 1: Write the proportion equation
391,430.44 : 540,176.07 = 219,348.79 : x - Step 2: Convert to fraction form
391,430.44/540,176.07 = 219,348.79/x - Step 3: Cross multiply
391,430.44x = 540,176.07 × 219,348.79 - Step 4: Simplify right side
391,430.44x = 118,486,967,341.46 - Step 5: Solve for x
x = 118,486,967,341.46/391,430.44 - Step 6: Final answer
x = 302,702.49
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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.