Finding the Fourth Proportional to 313,864.66, 432,993.36 and 209,117.08
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Solution
The fourth proportional to 313,864.66, 432,993.36 and 209,117.08 is: 288,488.38
Step by Step Solution
- Step 1: Write the proportion equation
313,864.66 : 432,993.36 = 209,117.08 : x - Step 2: Convert to fraction form
313,864.66/432,993.36 = 209,117.08/x - Step 3: Cross multiply
313,864.66x = 432,993.36 × 209,117.08 - Step 4: Simplify right side
313,864.66x = 90,546,307,102.59 - Step 5: Solve for x
x = 90,546,307,102.59/313,864.66 - Step 6: Final answer
x = 288,488.38
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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.