Finding the Fourth Proportional to 402,661.12, 555,676.08 and 221,374.32
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Solution
The fourth proportional to 402,661.12, 555,676.08 and 221,374.32 is: 305,498.62
Step by Step Solution
- Step 1: Write the proportion equation
402,661.12 : 555,676.08 = 221,374.32 : x - Step 2: Convert to fraction form
402,661.12/555,676.08 = 221,374.32/x - Step 3: Cross multiply
402,661.12x = 555,676.08 × 221,374.32 - Step 4: Simplify right side
402,661.12x = 123,012,417,264.21 - Step 5: Solve for x
x = 123,012,417,264.21/402,661.12 - Step 6: Final answer
x = 305,498.62
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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.