Finding the Fourth Proportional to 338,924.20, 508,386.30 and 128,534.80
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Solution
The fourth proportional to 338,924.20, 508,386.30 and 128,534.80 is: 192,802.20
Step by Step Solution
- Step 1: Write the proportion equation
338,924.20 : 508,386.30 = 128,534.80 : x - Step 2: Convert to fraction form
338,924.20/508,386.30 = 128,534.80/x - Step 3: Cross multiply
338,924.20x = 508,386.30 × 128,534.80 - Step 4: Simplify right side
338,924.20x = 65,345,331,393.24 - Step 5: Solve for x
x = 65,345,331,393.24/338,924.20 - Step 6: Final answer
x = 192,802.20
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.