Finding the Fourth Proportional to 369,210.48, 509,465.12 and 216,135.12
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Solution
The fourth proportional to 369,210.48, 509,465.12 and 216,135.12 is: 298,239.92
Step by Step Solution
- Step 1: Write the proportion equation
369,210.48 : 509,465.12 = 216,135.12 : x - Step 2: Convert to fraction form
369,210.48/509,465.12 = 216,135.12/x - Step 3: Cross multiply
369,210.48x = 509,465.12 × 216,135.12 - Step 4: Simplify right side
369,210.48x = 110,113,304,847.01 - Step 5: Solve for x
x = 110,113,304,847.01/369,210.48 - Step 6: Final answer
x = 298,239.92
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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.