Finding the Fourth Proportional to 319,428.15, 440,823.87 and 176,197.29
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Solution
The fourth proportional to 319,428.15, 440,823.87 and 176,197.29 is: 243,159.44
Step by Step Solution
- Step 1: Write the proportion equation
319,428.15 : 440,823.87 = 176,197.29 : x - Step 2: Convert to fraction form
319,428.15/440,823.87 = 176,197.29/x - Step 3: Cross multiply
319,428.15x = 440,823.87 × 176,197.29 - Step 4: Simplify right side
319,428.15x = 77,671,971,261.31 - Step 5: Solve for x
x = 77,671,971,261.31/319,428.15 - Step 6: Final answer
x = 243,159.44
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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.