Finding the Fourth Proportional to 521,899.20, 720,208.68 and 307,053.12
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Solution
The fourth proportional to 521,899.20, 720,208.68 and 307,053.12 is: 423,726.12
Step by Step Solution
- Step 1: Write the proportion equation
521,899.20 : 720,208.68 = 307,053.12 : x - Step 2: Convert to fraction form
521,899.20/720,208.68 = 307,053.12/x - Step 3: Cross multiply
521,899.20x = 720,208.68 × 307,053.12 - Step 4: Simplify right side
521,899.20x = 221,142,322,245.08 - Step 5: Solve for x
x = 221,142,322,245.08/521,899.20 - Step 6: Final answer
x = 423,726.12
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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.