Finding the Fourth Proportional to 418,995.84, 578,213.19 and 228,009.18
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Solution
The fourth proportional to 418,995.84, 578,213.19 and 228,009.18 is: 314,652.09
Step by Step Solution
- Step 1: Write the proportion equation
418,995.84 : 578,213.19 = 228,009.18 : x - Step 2: Convert to fraction form
418,995.84/578,213.19 = 228,009.18/x - Step 3: Cross multiply
418,995.84x = 578,213.19 × 228,009.18 - Step 4: Simplify right side
418,995.84x = 131,837,915,317.08 - Step 5: Solve for x
x = 131,837,915,317.08/418,995.84 - Step 6: Final answer
x = 314,652.09
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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.