Finding the Fourth Proportional to 311,362.12, 429,530.58 and 299,291.08
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Solution
The fourth proportional to 311,362.12, 429,530.58 and 299,291.08 is: 412,878.33
Step by Step Solution
- Step 1: Write the proportion equation
311,362.12 : 429,530.58 = 299,291.08 : x - Step 2: Convert to fraction form
311,362.12/429,530.58 = 299,291.08/x - Step 3: Cross multiply
311,362.12x = 429,530.58 × 299,291.08 - Step 4: Simplify right side
311,362.12x = 128,554,671,181.23 - Step 5: Solve for x
x = 128,554,671,181.23/311,362.12 - Step 6: Final answer
x = 412,878.33
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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.