Finding the Fourth Proportional to 316,542,416.87, 436,852,768.98 and 199,168,357.61
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Solution
The fourth proportional to 316,542,416.87, 436,852,768.98 and 199,168,357.61 is: 274,867,581.33
Step by Step Solution
- Step 1: Write the proportion equation
316,542,416.87 : 436,852,768.98 = 199,168,357.61 : x - Step 2: Convert to fraction form
316,542,416.87/436,852,768.98 = 199,168,357.61/x - Step 3: Cross multiply
316,542,416.87x = 436,852,768.98 × 199,168,357.61 - Step 4: Simplify right side
316,542,416.87x = 87,007,248,512,943,088 - Step 5: Solve for x
x = 87,007,248,512,943,088/316,542,416.87 - Step 6: Final answer
x = 274,867,581.33
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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.