Finding the Fourth Proportional to 318,821.12, 439,973.12 and 175,579.92
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Solution
The fourth proportional to 318,821.12, 439,973.12 and 175,579.92 is: 242,300.28
Step by Step Solution
- Step 1: Write the proportion equation
318,821.12 : 439,973.12 = 175,579.92 : x - Step 2: Convert to fraction form
318,821.12/439,973.12 = 175,579.92/x - Step 3: Cross multiply
318,821.12x = 439,973.12 × 175,579.92 - Step 4: Simplify right side
318,821.12x = 77,250,445,211.75 - Step 5: Solve for x
x = 77,250,445,211.75/318,821.12 - Step 6: Final answer
x = 242,300.28
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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.