Finding the Fourth Proportional to 415,927.40, 623,891.10 and 205,521.80
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Solution
The fourth proportional to 415,927.40, 623,891.10 and 205,521.80 is: 308,282.70
Step by Step Solution
- Step 1: Write the proportion equation
415,927.40 : 623,891.10 = 205,521.80 : x - Step 2: Convert to fraction form
415,927.40/623,891.10 = 205,521.80/x - Step 3: Cross multiply
415,927.40x = 623,891.10 × 205,521.80 - Step 4: Simplify right side
415,927.40x = 128,223,221,875.98 - Step 5: Solve for x
x = 128,223,221,875.98/415,927.40 - Step 6: Final answer
x = 308,282.70
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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.