Finding the Fourth Proportional to 402,961.68, 556,088.16 and 221,692.08
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Solution
The fourth proportional to 402,961.68, 556,088.16 and 221,692.08 is: 305,935.64
Step by Step Solution
- Step 1: Write the proportion equation
402,961.68 : 556,088.16 = 221,692.08 : x - Step 2: Convert to fraction form
402,961.68/556,088.16 = 221,692.08/x - Step 3: Cross multiply
402,961.68x = 556,088.16 × 221,692.08 - Step 4: Simplify right side
402,961.68x = 123,280,340,853.77 - Step 5: Solve for x
x = 123,280,340,853.77/402,961.68 - Step 6: Final answer
x = 305,935.64
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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.