Finding the Fourth Proportional to 292,357.80, 438,536.70 and 288,421.20
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Solution
The fourth proportional to 292,357.80, 438,536.70 and 288,421.20 is: 432,631.80
Step by Step Solution
- Step 1: Write the proportion equation
292,357.80 : 438,536.70 = 288,421.20 : x - Step 2: Convert to fraction form
292,357.80/438,536.70 = 288,421.20/x - Step 3: Cross multiply
292,357.80x = 438,536.70 × 288,421.20 - Step 4: Simplify right side
292,357.80x = 126,483,281,258.04 - Step 5: Solve for x
x = 126,483,281,258.04/292,357.80 - Step 6: Final answer
x = 432,631.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.