Finding the Fourth Proportional to 402,842.80, 555,911.88 and 221,554.68
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Solution
The fourth proportional to 402,842.80, 555,911.88 and 221,554.68 is: 305,739.31
Step by Step Solution
- Step 1: Write the proportion equation
402,842.80 : 555,911.88 = 221,554.68 : x - Step 2: Convert to fraction form
402,842.80/555,911.88 = 221,554.68/x - Step 3: Cross multiply
402,842.80x = 555,911.88 × 221,554.68 - Step 4: Simplify right side
402,842.80x = 123,164,878,681.60 - Step 5: Solve for x
x = 123,164,878,681.60/402,842.80 - Step 6: Final answer
x = 305,739.31
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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.