Finding the Fourth Proportional to 282,786.30, 390,235.14 and 155,460.96
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Solution
The fourth proportional to 282,786.30, 390,235.14 and 155,460.96 is: 214,530.65
Step by Step Solution
- Step 1: Write the proportion equation
282,786.30 : 390,235.14 = 155,460.96 : x - Step 2: Convert to fraction form
282,786.30/390,235.14 = 155,460.96/x - Step 3: Cross multiply
282,786.30x = 390,235.14 × 155,460.96 - Step 4: Simplify right side
282,786.30x = 60,666,329,490.13 - Step 5: Solve for x
x = 60,666,329,490.13/282,786.30 - Step 6: Final answer
x = 214,530.65
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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.