Finding the Fourth Proportional to 422,417.36, 633,573.12 and 138,084.08
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Solution
The fourth proportional to 422,417.36, 633,573.12 and 138,084.08 is: 207,108.82
Step by Step Solution
- Step 1: Write the proportion equation
422,417.36 : 633,573.12 = 138,084.08 : x - Step 2: Convert to fraction form
422,417.36/633,573.12 = 138,084.08/x - Step 3: Cross multiply
422,417.36x = 633,573.12 × 138,084.08 - Step 4: Simplify right side
422,417.36x = 87,486,361,387.93 - Step 5: Solve for x
x = 87,486,361,387.93/422,417.36 - Step 6: Final answer
x = 207,108.82
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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.