Finding the Fourth Proportional to 291,983.60, 438,121.20 and 165,720.80
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Solution
The fourth proportional to 291,983.60, 438,121.20 and 165,720.80 is: 248,663.95
Step by Step Solution
- Step 1: Write the proportion equation
291,983.60 : 438,121.20 = 165,720.80 : x - Step 2: Convert to fraction form
291,983.60/438,121.20 = 165,720.80/x - Step 3: Cross multiply
291,983.60x = 438,121.20 × 165,720.80 - Step 4: Simplify right side
291,983.60x = 72,605,795,760.96 - Step 5: Solve for x
x = 72,605,795,760.96/291,983.60 - Step 6: Final answer
x = 248,663.95
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.