Finding the Fourth Proportional to 415,722.28, 623,116.86 and 205,507.84
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Solution
The fourth proportional to 415,722.28, 623,116.86 and 205,507.84 is: 308,031.12
Step by Step Solution
- Step 1: Write the proportion equation
415,722.28 : 623,116.86 = 205,507.84 : x - Step 2: Convert to fraction form
415,722.28/623,116.86 = 205,507.84/x - Step 3: Cross multiply
415,722.28x = 623,116.86 × 205,507.84 - Step 4: Simplify right side
415,722.28x = 128,055,399,966.18 - Step 5: Solve for x
x = 128,055,399,966.18/415,722.28 - Step 6: Final answer
x = 308,031.12
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.