Finding the Fourth Proportional to 319,432.08, 440,808.55 and 176,189.05
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Solution
The fourth proportional to 319,432.08, 440,808.55 and 176,189.05 is: 243,136.63
Step by Step Solution
- Step 1: Write the proportion equation
319,432.08 : 440,808.55 = 176,189.05 : x - Step 2: Convert to fraction form
319,432.08/440,808.55 = 176,189.05/x - Step 3: Cross multiply
319,432.08x = 440,808.55 × 176,189.05 - Step 4: Simplify right side
319,432.08x = 77,665,638,113.88 - Step 5: Solve for x
x = 77,665,638,113.88/319,432.08 - Step 6: Final answer
x = 243,136.63
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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.