Finding the Fourth Proportional to 400,820.31, 553,138.34 and 219,528.99
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Solution
The fourth proportional to 400,820.31, 553,138.34 and 219,528.99 is: 302,953.46
Step by Step Solution
- Step 1: Write the proportion equation
400,820.31 : 553,138.34 = 219,528.99 : x - Step 2: Convert to fraction form
400,820.31/553,138.34 = 219,528.99/x - Step 3: Cross multiply
400,820.31x = 553,138.34 × 219,528.99 - Step 4: Simplify right side
400,820.31x = 121,429,900,012.83 - Step 5: Solve for x
x = 121,429,900,012.83/400,820.31 - Step 6: Final answer
x = 302,953.46
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1.5x scale
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.