Finding the Fourth Proportional to 318,372.15, 439,351.11 and 175,129.05
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Solution
The fourth proportional to 318,372.15, 439,351.11 and 175,129.05 is: 241,676.74
Step by Step Solution
- Step 1: Write the proportion equation
318,372.15 : 439,351.11 = 175,129.05 : x - Step 2: Convert to fraction form
318,372.15/439,351.11 = 175,129.05/x - Step 3: Cross multiply
318,372.15x = 439,351.11 × 175,129.05 - Step 4: Simplify right side
318,372.15x = 76,943,142,510.75 - Step 5: Solve for x
x = 76,943,142,510.75/318,372.15 - Step 6: Final answer
x = 241,676.74
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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.