Finding the Fourth Proportional to 418,978.76, 578,197.70 and 227,995.08
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Solution
The fourth proportional to 418,978.76, 578,197.70 and 227,995.08 is: 314,637.03
Step by Step Solution
- Step 1: Write the proportion equation
418,978.76 : 578,197.70 = 227,995.08 : x - Step 2: Convert to fraction form
418,978.76/578,197.70 = 227,995.08/x - Step 3: Cross multiply
418,978.76x = 578,197.70 × 227,995.08 - Step 4: Simplify right side
418,978.76x = 131,826,230,867.32 - Step 5: Solve for x
x = 131,826,230,867.32/418,978.76 - Step 6: Final answer
x = 314,637.03
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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.