Finding the Fourth Proportional to 291,961.06, 402,970.76 and 189,808.72
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Solution
The fourth proportional to 291,961.06, 402,970.76 and 189,808.72 is: 261,977.96
Step by Step Solution
- Step 1: Write the proportion equation
291,961.06 : 402,970.76 = 189,808.72 : x - Step 2: Convert to fraction form
291,961.06/402,970.76 = 189,808.72/x - Step 3: Cross multiply
291,961.06x = 402,970.76 × 189,808.72 - Step 4: Simplify right side
291,961.06x = 76,487,364,153.03 - Step 5: Solve for x
x = 76,487,364,153.03/291,961.06 - Step 6: Final answer
x = 261,977.96
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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.