Finding the Fourth Proportional to 291,671.98, 437,509.80 and 81,311.74
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Solution
The fourth proportional to 291,671.98, 437,509.80 and 81,311.74 is: 121,968.12
Step by Step Solution
- Step 1: Write the proportion equation
291,671.98 : 437,509.80 = 81,311.74 : x - Step 2: Convert to fraction form
291,671.98/437,509.80 = 81,311.74/x - Step 3: Cross multiply
291,671.98x = 437,509.80 × 81,311.74 - Step 4: Simplify right side
291,671.98x = 35,574,683,105.05 - Step 5: Solve for x
x = 35,574,683,105.05/291,671.98 - Step 6: Final answer
x = 121,968.12
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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.