Finding the Fourth Proportional to 282,703.08, 390,137.40 and 155,381.88
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Solution
The fourth proportional to 282,703.08, 390,137.40 and 155,381.88 is: 214,430.92
Step by Step Solution
- Step 1: Write the proportion equation
282,703.08 : 390,137.40 = 155,381.88 : x - Step 2: Convert to fraction form
282,703.08/390,137.40 = 155,381.88/x - Step 3: Cross multiply
282,703.08x = 390,137.40 × 155,381.88 - Step 4: Simplify right side
282,703.08x = 60,620,282,670.31 - Step 5: Solve for x
x = 60,620,282,670.31/282,703.08 - Step 6: Final answer
x = 214,430.92
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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.