Finding the Fourth Proportional to 367,980.13, 551,953.62 and 128,263.06
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Solution
The fourth proportional to 367,980.13, 551,953.62 and 128,263.06 is: 192,388.81
Step by Step Solution
- Step 1: Write the proportion equation
367,980.13 : 551,953.62 = 128,263.06 : x - Step 2: Convert to fraction form
367,980.13/551,953.62 = 128,263.06/x - Step 3: Cross multiply
367,980.13x = 551,953.62 × 128,263.06 - Step 4: Simplify right side
367,980.13x = 70,795,260,279.28 - Step 5: Solve for x
x = 70,795,260,279.28/367,980.13 - Step 6: Final answer
x = 192,388.81
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1.5x scale
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.