Finding the Fourth Proportional to 297,009.20, 445,513.80 and 86,619.80
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Solution
The fourth proportional to 297,009.20, 445,513.80 and 86,619.80 is: 129,929.70
Step by Step Solution
- Step 1: Write the proportion equation
297,009.20 : 445,513.80 = 86,619.80 : x - Step 2: Convert to fraction form
297,009.20/445,513.80 = 86,619.80/x - Step 3: Cross multiply
297,009.20x = 445,513.80 × 86,619.80 - Step 4: Simplify right side
297,009.20x = 38,590,316,253.24 - Step 5: Solve for x
x = 38,590,316,253.24/297,009.20 - Step 6: Final answer
x = 129,929.70
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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.