Finding the Fourth Proportional to 257,840.18, 355,813.94 and 143,112.14
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Solution
The fourth proportional to 257,840.18, 355,813.94 and 143,112.14 is: 197,491.70
Step by Step Solution
- Step 1: Write the proportion equation
257,840.18 : 355,813.94 = 143,112.14 : x - Step 2: Convert to fraction form
257,840.18/355,813.94 = 143,112.14/x - Step 3: Cross multiply
257,840.18x = 355,813.94 × 143,112.14 - Step 4: Simplify right side
257,840.18x = 50,921,294,395.23 - Step 5: Solve for x
x = 50,921,294,395.23/257,840.18 - Step 6: Final answer
x = 197,491.70
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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.