Finding the Fourth Proportional to 257,907.48, 386,916.50 and 77,977.52
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Solution
The fourth proportional to 257,907.48, 386,916.50 and 77,977.52 is: 116,982.99
Step by Step Solution
- Step 1: Write the proportion equation
257,907.48 : 386,916.50 = 77,977.52 : x - Step 2: Convert to fraction form
257,907.48/386,916.50 = 77,977.52/x - Step 3: Cross multiply
257,907.48x = 386,916.50 × 77,977.52 - Step 4: Simplify right side
257,907.48x = 30,170,789,117.08 - Step 5: Solve for x
x = 30,170,789,117.08/257,907.48 - Step 6: Final answer
x = 116,982.99
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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.