Finding the Fourth Proportional to 319,420.20, 440,783.96 and 176,171.70
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Solution
The fourth proportional to 319,420.20, 440,783.96 and 176,171.70 is: 243,108.17
Step by Step Solution
- Step 1: Write the proportion equation
319,420.20 : 440,783.96 = 176,171.70 : x - Step 2: Convert to fraction form
319,420.20/440,783.96 = 176,171.70/x - Step 3: Cross multiply
319,420.20x = 440,783.96 × 176,171.70 - Step 4: Simplify right side
319,420.20x = 77,653,659,565.93 - Step 5: Solve for x
x = 77,653,659,565.93/319,420.20 - Step 6: Final answer
x = 243,108.17
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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.