Finding the Fourth Proportional to 228,587.91, 315,456.05 and 136,802.08
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Solution
The fourth proportional to 228,587.91, 315,456.05 and 136,802.08 is: 188,789.70
Step by Step Solution
- Step 1: Write the proportion equation
228,587.91 : 315,456.05 = 136,802.08 : x - Step 2: Convert to fraction form
228,587.91/315,456.05 = 136,802.08/x - Step 3: Cross multiply
228,587.91x = 315,456.05 × 136,802.08 - Step 4: Simplify right side
228,587.91x = 43,155,043,788.58 - Step 5: Solve for x
x = 43,155,043,788.58/228,587.91 - Step 6: Final answer
x = 188,789.70
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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.