Finding the Fourth Proportional to 318,974.24, 440,215.58 and 238,261.76
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Solution
The fourth proportional to 318,974.24, 440,215.58 and 238,261.76 is: 328,824.48
Step by Step Solution
- Step 1: Write the proportion equation
318,974.24 : 440,215.58 = 238,261.76 : x - Step 2: Convert to fraction form
318,974.24/440,215.58 = 238,261.76/x - Step 3: Cross multiply
318,974.24x = 440,215.58 × 238,261.76 - Step 4: Simplify right side
318,974.24x = 104,886,538,870.22 - Step 5: Solve for x
x = 104,886,538,870.22/318,974.24 - Step 6: Final answer
x = 328,824.48
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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.