Finding the Fourth Proportional to 386,328.18, 533,130.75 and 216,558.66
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Solution
The fourth proportional to 386,328.18, 533,130.75 and 216,558.66 is: 298,849.75
Step by Step Solution
- Step 1: Write the proportion equation
386,328.18 : 533,130.75 = 216,558.66 : x - Step 2: Convert to fraction form
386,328.18/533,130.75 = 216,558.66/x - Step 3: Cross multiply
386,328.18x = 533,130.75 × 216,558.66 - Step 4: Simplify right side
386,328.18x = 115,454,080,824.80 - Step 5: Solve for x
x = 115,454,080,824.80/386,328.18 - Step 6: Final answer
x = 298,849.75
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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.