Finding the Fourth Proportional to 355,029.30, 489,886.29 and 211,789.62
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Solution
The fourth proportional to 355,029.30, 489,886.29 and 211,789.62 is: 292,237.38
Step by Step Solution
- Step 1: Write the proportion equation
355,029.30 : 489,886.29 = 211,789.62 : x - Step 2: Convert to fraction form
355,029.30/489,886.29 = 211,789.62/x - Step 3: Cross multiply
355,029.30x = 489,886.29 × 211,789.62 - Step 4: Simplify right side
355,029.30x = 103,752,831,202.31 - Step 5: Solve for x
x = 103,752,831,202.31/355,029.30 - Step 6: Final answer
x = 292,237.38
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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.