Finding the Fourth Proportional to 210,873.02, 316,309.74 and 86,214.02
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Solution
The fourth proportional to 210,873.02, 316,309.74 and 86,214.02 is: 129,321.12
Step by Step Solution
- Step 1: Write the proportion equation
210,873.02 : 316,309.74 = 86,214.02 : x - Step 2: Convert to fraction form
210,873.02/316,309.74 = 86,214.02/x - Step 3: Cross multiply
210,873.02x = 316,309.74 × 86,214.02 - Step 4: Simplify right side
210,873.02x = 27,270,334,250.55 - Step 5: Solve for x
x = 27,270,334,250.55/210,873.02 - Step 6: Final answer
x = 129,321.12
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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.