Finding the Fourth Proportional to 256,593,518.79, 354,101,687.33 and 139,119,076.23
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Solution
The fourth proportional to 256,593,518.79, 354,101,687.33 and 139,119,076.23 is: 191,985,751.88
Step by Step Solution
- Step 1: Write the proportion equation
256,593,518.79 : 354,101,687.33 = 139,119,076.23 : x - Step 2: Convert to fraction form
256,593,518.79/354,101,687.33 = 139,119,076.23/x - Step 3: Cross multiply
256,593,518.79x = 354,101,687.33 × 139,119,076.23 - Step 4: Simplify right side
256,593,518.79x = 49,262,299,632,833,888 - Step 5: Solve for x
x = 49,262,299,632,833,888/256,593,518.79 - Step 6: Final answer
x = 191,985,751.88
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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.