Finding the Fourth Proportional to 420,291.11, 579,998.95 and 239,003.06
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Solution
The fourth proportional to 420,291.11, 579,998.95 and 239,003.06 is: 329,822.63
Step by Step Solution
- Step 1: Write the proportion equation
420,291.11 : 579,998.95 = 239,003.06 : x - Step 2: Convert to fraction form
420,291.11/579,998.95 = 239,003.06/x - Step 3: Cross multiply
420,291.11x = 579,998.95 × 239,003.06 - Step 4: Simplify right side
420,291.11x = 138,621,520,349.29 - Step 5: Solve for x
x = 138,621,520,349.29/420,291.11 - Step 6: Final answer
x = 329,822.63
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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.