Finding the Fourth Proportional to 279,807.12, 386,122.44 and 152,479.92
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Solution
The fourth proportional to 279,807.12, 386,122.44 and 152,479.92 is: 210,416.09
Step by Step Solution
- Step 1: Write the proportion equation
279,807.12 : 386,122.44 = 152,479.92 : x - Step 2: Convert to fraction form
279,807.12/386,122.44 = 152,479.92/x - Step 3: Cross multiply
279,807.12x = 386,122.44 × 152,479.92 - Step 4: Simplify right side
279,807.12x = 58,875,918,761.40 - Step 5: Solve for x
x = 58,875,918,761.40/279,807.12 - Step 6: Final answer
x = 210,416.09
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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.