Finding the Fourth Proportional to 319,507.21, 440,921.43 and 176,267.20
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Solution
The fourth proportional to 319,507.21, 440,921.43 and 176,267.20 is: 243,249.55
Step by Step Solution
- Step 1: Write the proportion equation
319,507.21 : 440,921.43 = 176,267.20 : x - Step 2: Convert to fraction form
319,507.21/440,921.43 = 176,267.20/x - Step 3: Cross multiply
319,507.21x = 440,921.43 × 176,267.20 - Step 4: Simplify right side
319,507.21x = 77,719,985,886.10 - Step 5: Solve for x
x = 77,719,985,886.10/319,507.21 - Step 6: Final answer
x = 243,249.55
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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.