Finding the Fourth Proportional to 280,138.08, 386,590.09 and 152,813.67
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Solution
The fourth proportional to 280,138.08, 386,590.09 and 152,813.67 is: 210,882.61
Step by Step Solution
- Step 1: Write the proportion equation
280,138.08 : 386,590.09 = 152,813.67 : x - Step 2: Convert to fraction form
280,138.08/386,590.09 = 152,813.67/x - Step 3: Cross multiply
280,138.08x = 386,590.09 × 152,813.67 - Step 4: Simplify right side
280,138.08x = 59,076,250,438.53 - Step 5: Solve for x
x = 59,076,250,438.53/280,138.08 - Step 6: Final answer
x = 210,882.61
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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.