Finding the Fourth Proportional to 316,521.40, 436,804.74 and 173,279.08
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Solution
The fourth proportional to 316,521.40, 436,804.74 and 173,279.08 is: 239,127.98
Step by Step Solution
- Step 1: Write the proportion equation
316,521.40 : 436,804.74 = 173,279.08 : x - Step 2: Convert to fraction form
316,521.40/436,804.74 = 173,279.08/x - Step 3: Cross multiply
316,521.40x = 436,804.74 × 173,279.08 - Step 4: Simplify right side
316,521.40x = 75,689,123,486.84 - Step 5: Solve for x
x = 75,689,123,486.84/316,521.40 - Step 6: Final answer
x = 239,127.98
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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.