Finding the Fourth Proportional to 402,339.12, 555,237.75 and 221,062.80
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Solution
The fourth proportional to 402,339.12, 555,237.75 and 221,062.80 is: 305,072.03
Step by Step Solution
- Step 1: Write the proportion equation
402,339.12 : 555,237.75 = 221,062.80 : x - Step 2: Convert to fraction form
402,339.12/555,237.75 = 221,062.80/x - Step 3: Cross multiply
402,339.12x = 555,237.75 × 221,062.80 - Step 4: Simplify right side
402,339.12x = 122,742,411,680.70 - Step 5: Solve for x
x = 122,742,411,680.70/402,339.12 - Step 6: Final answer
x = 305,072.03
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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.