Finding the Fourth Proportional to 386,780.40, 533,766.16 and 217,027.08
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Solution
The fourth proportional to 386,780.40, 533,766.16 and 217,027.08 is: 299,502.53
Step by Step Solution
- Step 1: Write the proportion equation
386,780.40 : 533,766.16 = 217,027.08 : x - Step 2: Convert to fraction form
386,780.40/533,766.16 = 217,027.08/x - Step 3: Cross multiply
386,780.40x = 533,766.16 × 217,027.08 - Step 4: Simplify right side
386,780.40x = 115,841,709,626.55 - Step 5: Solve for x
x = 115,841,709,626.55/386,780.40 - Step 6: Final answer
x = 299,502.53
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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.