Finding the Fourth Proportional to 310,867.09, 428,996.61 and 176,731.09
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Solution
The fourth proportional to 310,867.09, 428,996.61 and 176,731.09 is: 243,888.92
Step by Step Solution
- Step 1: Write the proportion equation
310,867.09 : 428,996.61 = 176,731.09 : x - Step 2: Convert to fraction form
310,867.09/428,996.61 = 176,731.09/x - Step 3: Cross multiply
310,867.09x = 428,996.61 × 176,731.09 - Step 4: Simplify right side
310,867.09x = 75,817,037,607.95 - Step 5: Solve for x
x = 75,817,037,607.95/310,867.09 - Step 6: Final answer
x = 243,888.92
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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.