Finding the Fourth Proportional to 291,963.28, 437,923.05 and 81,617.62
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Solution
The fourth proportional to 291,963.28, 437,923.05 and 81,617.62 is: 122,420.32
Step by Step Solution
- Step 1: Write the proportion equation
291,963.28 : 437,923.05 = 81,617.62 : x - Step 2: Convert to fraction form
291,963.28/437,923.05 = 81,617.62/x - Step 3: Cross multiply
291,963.28x = 437,923.05 × 81,617.62 - Step 4: Simplify right side
291,963.28x = 35,742,237,084.14 - Step 5: Solve for x
x = 35,742,237,084.14/291,963.28 - Step 6: Final answer
x = 122,420.32
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.