Finding the Fourth Proportional to 415,935.40, 623,903.10 and 205,529.80
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Solution
The fourth proportional to 415,935.40, 623,903.10 and 205,529.80 is: 308,294.70
Step by Step Solution
- Step 1: Write the proportion equation
415,935.40 : 623,903.10 = 205,529.80 : x - Step 2: Convert to fraction form
415,935.40/623,903.10 = 205,529.80/x - Step 3: Cross multiply
415,935.40x = 623,903.10 × 205,529.80 - Step 4: Simplify right side
415,935.40x = 128,230,679,362.38 - Step 5: Solve for x
x = 128,230,679,362.38/415,935.40 - Step 6: Final answer
x = 308,294.70
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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.