Finding the Fourth Proportional to 402,492.48, 555,436.80 and 221,206.08
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Solution
The fourth proportional to 402,492.48, 555,436.80 and 221,206.08 is: 305,262.84
Step by Step Solution
- Step 1: Write the proportion equation
402,492.48 : 555,436.80 = 221,206.08 : x - Step 2: Convert to fraction form
402,492.48/555,436.80 = 221,206.08/x - Step 3: Cross multiply
402,492.48x = 555,436.80 × 221,206.08 - Step 4: Simplify right side
402,492.48x = 122,865,997,215.74 - Step 5: Solve for x
x = 122,865,997,215.74/402,492.48 - Step 6: Final answer
x = 305,262.84
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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.